Here’s a really quick, really rough doodle of an idea I had for an Ocellus Daki design.  
I know I probably don’t have near enough skill to create a design that would be good enough to actually put into production, but I figured it’d be fun to give it a wack anyway.  
To be honest, this came out a lot better than I expected. This was just me being bored, and not really even trying to do a decent job. I didn’t time myself, but I think I did this in about 15 to 20 minutes, which actually kinda surprises me!
 
Anyway, I have no idea if the dimensions of this is anywhere near what a daki design is supposed to be, like I said, I was just being bored, and wanting to draw Ocellus. I think her hoof might be a tad too far to the side to fit on the pillowcase, or she might just be printed small on the case or something.
 
Whatever, as I said, I doubt I am good enough to make this production worthy, but even so, I rather like how it came out! I think I’ll try to go ahead and make a reverse-side design, and maybe even try to do an ink and color version in the proper dimensions, because why not? XP  
I saw on one source that the dimensions for the entire design should be 2953 x 8858, though I have no idea how to measure that out on a paper. XP  
I think the pillowcases tend to be 50cm x 150cm, which ratio is 1:3 per side, which would be relatively easy to measure out on a paper, I suppose.  
Anyway, I’m tired. Im gonna hit the hay…