As part of the "James, the signature on your drawing is a couple of years old" theme of these drawings, here's a Changeling as a Wonderbolt.
I remember enjoying doing this one, even though now that I look at it the only thing I can think of is how much darker the characters are lit despite them being outside, in the sun, in the sky. Ah well, as they say hindsight is 20/20, and I considered getting this one on Photoshop and lighten the shadows, but that'd be the breeding grounds of a bad habit. Going back to fix old drawings because we can't put up with the warts they developed over the years (there's a Star Wars revisionism joke in there somewhere).
I think Spitfire came out OK. Then again it's difficult to mock up Spitfire, she's got a rather perfect design.