I think you got the hang of it on Metagross' front right leg/arm/whatever that thing is there. With the light/white colour and dithering. It could probably use more of that on top of the head and on the other front leg too. But it's cool you picked it up so quickly, I have no idea how to do devamps. xD I like your other sprites too. Especially the Christmas Torterra and the Onix/Shieldon/Excavalier!