Wheres his eye

?
Its not a bad sig tbh, I like the blending of the colours but first of all your smudging needs more detail and variation, try downloading different smudge brushes and sharpening the smudging from time to time also displace filters look nice sometimes. The text is meh, it doesn't really help the sig except for filling up empty space. Remove the border I think it would look better that way. Also your composition is bad a centered render like that does not suit imo.
Smudging is hard to get a hang of but I'm sure if you keep trying you'll get the hang of it