Ali, I LOVE that sketch! Sloppy?? Not at all, its very stylish and loose, just what a real artist often would do. Well not all artists but a lot do, I love it! The only thing I would comment on is the colour of the dress - it should stand out more, orange and greens as Elric suggested, and maybe with some stronger reds in between. Beautiful work Ali, keep it up! And cant wait to see the finished piece.
Cheers
Cheers