Ugh... the stupid game's sucked me back in. (The one nice development in the four years I've been gone. I can "purchase" eggs I want, if i have enough points, instead of messing with the nest of vipers that is the forums.)
@
(you need an account to see links) I found another page in the game you might like for dragon sprite ideas/practice
(you need an account to see links) It's a random selection of abandoned dragons in-game. One of those videos mentioned it was important to stay inside of your limits. So you can get an idea of the detail level is possible inside of 100x100 pixels from that page. Some are better than others. But I think it's a good size to start practicing in.