not too bad for your first piece! it could be the lighting but from that one picture, i agree the green is a bit dark. if you're set on rattle-cans, Rustoleum makes a matte moss green that is closer to the lighter green that they should be. you may want to tone down the shine with a shot or two of dulcote. also, it looks like one of your dental files is blue? should be silver. definitely on the right track, keep it up!
Sent from my R2 unit