Yea.. it could use some more shading. Anyways, personally I love it--it looks great. For a freehand.. this is a definite 5/5. Oh.. and by the way, thanks for putting the correct metal border around it.. lately people have been putting incorrect borders around their icons.
Your icons are great

,
BrownSnow
::EDIT::
Isn't the DISBTN supposed to have a border?? I think that you mixed up DISPASBTN and DISBTN.. Anyways.. its still awesome, just change that 1 small flaw.