Not bad at all for a first sig, nice work
What i would try:
It looks a little chop-e i dunno how to explain it.
Its kinda hard to read the bobing headz text maybe make it a little bigger.
Vicks face looks a little blurry (did you get a smal pic of him and blow it up?)
Just a few things to work on for now
But really it is great for a first