To bad about the size of the picture and some of them are unsharp, atleast on my screen. Otherwise it looks good and clean. I do believe that the black areas in some places are going a little bit to fast to the grey area. there could be some more blending there. But hard to say with the pictures. Next time do a WIP thread when you start and hopefully we will have time to go by and give comments and help improving.
Take care and enjoy.
Looks nice but would benefit from larger pics. Normal (unmagnified) viewing on here is 600-900 pixels wide so aim for that if you can with your software. Otherwise the mini looks cleanly painted. Keep up the good work.