Image imported from derpibooru 
Original Description:
 
For those who followed me on DA, it’s been a very long time since I’ve done Anthro Pony art. Welp….here we are.
 
Both ricardomcneilpkX and BartonBelladonna made a story each based on this, ultimately, I had to go with BB’s so the picture is kinda misleading.
 
Queen Chrysalis was sitting at her throne, in her dark cave fortress, and she was…..sad. Sad and disappointed about how much she had failed to defeat the Queens of Equestria, Celestia and Luna, who rose in rank after a large battle, and took over the lands. She rested her head on her hand as some of her changeling minions were rubbing her feet, which usually made her feel better. “sigh This isn’t how I thought I’d rule……all I wanted was to rule the land, and now I’m just ruling a dark and putrid cave.” she said, saddened in her voice. Little did she know, walking just outside the entrance of her cave, a little dragon was walking down the road to the village, humming. “Man, Twilight wasn’t kidding when she said the new science book was far away. 2 villages over….well, either way, she’ll be happy to see this.” When Spike passed by the entrance of her cave, he heard her saddened voice. “Huh?” he silently flew in, and hid behind some rocks, watching her. Chrysalis still had the saddened look on her face, and sighed again. “Maybe it’s time I….gave up on being evil. Maybe I should just try to be a normal mare……but queens would never accept me and my changelings…..” Spike was surprised. “She’s……giving up? She never gives up…I have to tell the queens.” He flew out of the cave and flew to Canterlot after dropping off the book at Twilight’s. Spike flew into the queen’s room as they were brushing their hair. “Aah, Spike. Welcome back. What do we owe the pleasure?” Celestia asked. Spike looked down, and rubbed his foot on the carpet. “Well…..I discovered something interesting. Flying off far to retrieve a new science book for Twilight, I saw……a saddened Queen Chrysalis has given up and denounced her evilness.” The two queens gasped. “Really?” Luna asked. Spike nodded. “And, it might not be the most wise, but…..if I may….I ask for a favor….”
 
2 months later
 
It’s officially been 2 months since Queen Chrysalis’ denouncement of evil. But within that 2 months, her and her changeling’s lives have changed for the better. The queens allowed them to live in the village with them, and allowed them to live their normal lives, and they certainly have. Chrysalis was even able to get a job at Applejack’s farm, helping pick apples and such. Chrysalis was finally happy. She always had a big smile on her face when working or walking around town, and she didn’t know whether to hug everyone, or just say hello. She had one little dragon to thank. She walked to Twilight’s castle and walked into the throne room, where no one except Spike was there, who was reading a Power Ponies comic book. She walked over to the dragon, and sat in front of him. “Huh?” he looked up, seeing her. “Oh! Hey Chrysalis! How’re you doing on this fine Saturday?” Chrysalis smiled softly at him. “I’m doing wonderful, Spike. I just wanted to come and thank you for what you did for me.” Spike nodded, looking down at her feet, which were quite big, possibly bigger than Spike, which shocked him. She decided not to wear shoes today, but still had her stirrup straps on. Her feet were also clean because ever since she moved into Ponyville, she liked to keep herself neat and tidy, so her feet didn’t smell bad as before, even though her feet had a small odor to them every now and then, her feet were squeaky clean. Spike blushed at this, since he has had a thing for feet, and just about every one of his friends know and exploit it, which he liked anyway. (For those who didn’t know, yes, it’s canon.) Chrysalis smiled at him. “Oh! Hold on! I have something for you.” She got on the floor, sitting on her knees, and looked through a bag of hers, her feet right near him, toes wiggling a little. “Sighs well, better now than later.” He got up from his seat, walked over to her feet, and right when Chrysalis sat up, not sitting on her knees but still on them, Spike sat on her calves, which made her gasp a little in surprise, and he leaned his head down, smelling her feet. Chrysalis turned back at the dragon, who she realized was smaller than she thought if he was able to sit on her calves. “Spike?” she said as he kept sniffing her black feet. They had a divine smell to them, with a little dust on them from the walk here. he smiled as he rubbed his nose into her soles, but the stirrup straps were in the way. Instinctively, he pulled the stirrup straps down, revealing the whole soles of her feet, making Chrysalis giggle. He licked his lips and started to lick her bare soles, which made the changeling queen laugh. “Spihihihihike! That tihihihihihickles!” Spike didn’t really care as he kept licking, grabbing her ankles with his little hands to keep them from going anywhere. The queen squirmed and wiggled her toes, eventually falling forward gently onto the floor, giving Spike more room to sit on her legs and relax as he kept licking her soles, making her laugh even more. Spike also loved tickling them, since it also made him feel good, and so when he licked one foot, his claws were scratching gently at the other one. Chrysalis was laughing uncontrollably, but she was still happy, having fun with what Spike was doing. It felt good, like really good, and even though it tortured her, it was still a lot of fun. Spike then moved up to her toes, where, with his little fangs, he nibbled on each toe, one at a time. A little later, he began to slither his tongue like a snake on the bases of her toes, which made her scream with laughter, causing her to tear up, slamming her fists on the floor of the throne room. He didn’t want to stop, and he didn’t stop for a long time.
 
At about nighttime, he finally ended his little worship and tickle, standing up from her calves, freeing her legs, leaving her big feet sweaty. He walked over to her head, seeing she was giggling and panting a little, tears in her eyes, the biggest smile on her face. “Have fun?” he asked with a smile. Chrysalis looked up at him. “It was the best, Spike. thank you so much!” she said. Spike smiled, helping her up after she put her stirrup straps back to where they were before. “Now then, little dragon, how about I buy you some gems to thank you?” Spike chuckled. “Aww, that’s OK Chrysalis. There’s no need fo—” He was interrupted when he felt a toe on his lips, and he looked at it, blushing. “Shh shh sh…..no arguing, because this isn’t the last time I want this to be happening. I’s like you to do this again soon. and keep it up whenever you want. I will never say no, and I will reward you with whatever makes you smile, friend. OK?” Spike put her foot down. “Well, with such a nice offer like that…..how can I say no?”
 
Queen Chrysalis © Hasbro