well on a scale of 1- 10 ( on your photoshop) 10 being rad.. i would say your roughly a 6-7 you used a couple filters, gradient change, added a front clip.. or it looks like you did. all in all id say you did a good job.. with a about a years more practice.. you should be up in the 9-10 mark..
heres a photoshop i did of my next project.... id say mine is about a 7-8
steve