I'm with Jan. It aint 'pretty decent', it's pretty bl**dy amazing!
As you say, you picked a right sod of subject to experiment on; a bit like learning to drive in a F1 car!
But, just think how much you've learned, some of it the hard way, which is good experience. Just think, when you come to do the Corsair, it'll not only seem a lot easier, it'll look fantastic!
I've learned some things due to this GB, and it's down to all the great guys here. I know one thing, I think I'll be getting a slightly more sophisticated airbrush, if the deals I've seen are as good as they seem, otherwise, I won't be able to keep up with you all!