Pretty good. The lighting isn't good though, you might wanna adjust that.
For the first pic, Conan looks a bit fat. His face is also slightly awkward.
The next one looks odd somehow...dunno why though.
Third one is pretty good, you might wanna get a better eraser to erase a few lines here and there.
In the fourth one, Conan's mouth...dunno how, but looks a bit odd.
Besides that, great job!