Here is the glass and coaster dedicated to the Great and Powerful Trixie. Her glass (and several more in the current set) were a special challange because of many different shades of the same color being involved in the same cutie mark when the number of glass colors available is somewhat limited and color mixing a bit of a mess. Therefore I applied multiple layers of colorse and burned them in several times (it is not possible to apply a second layer of color before the first one is burned in) and it worked better than I had feared it would.
Since the coaster is mostly blocked by the glass in the above picture I uploaded a scan of just the coaster separately: