Need feedback on drawing I drew wtih new program.

[Slice0Pie 815]

Hello

I am a newbie with Paint Toll sai and decided to give it a try! What do you think? The lines look out of place because I messed up and it made me mad lol.

So.. ya!

I also messed up a bit with the shading, lighting, and muzzle 

[mopsandy 19]

I think it's great for your first try! One thing that is very special (and useful) with Painttool SAI is the stabilizer. It makes your lines much smoother and will make for example the lineart look much cleaner, you should give it a try  . The coloring is very good, the only thing is that you maybe should add some more contrast between the shadows and the highlights. Otherwise I can't find anything that I can give so much feedback on. Good work!