Small party - 30 minute challenge

The theme for this challenge was to draw ponies in a party. I would normally clean this up and maybe add a background, but there's something unique about this one for me. This is one of my benchmark drawings. When I first started doing the challenges, there was no way I could possibly draw something like this. If I tried, I probably wouldn't even have finished the line art. Keeping this in the state its in helps me see how far I've come and shows me what I need to focus on more.