Well, this is just a leetle
bit out of my league, but I'll give it a shot.
The first one, well, I can't really comment on it except by expressing my utter confusion. I have no clue who the person is or why the text is relevant. The orange splotches seem a bit chaotic and purposeless. That said, perhaps there is a purpose and I'm just not understanding the reference. The focal is very strong, and the banner is still quite pretty.
As for the second one, let me say that the effects are amazing. They do, however, look a little "pasted on", as if I was looking at 3-d effects hovering in front of a 3-d scene, and don't seem to be so much a part of the picture as in front of it. This is more noticeable in the left hand than in the right, which seems pretty seamless. This may also be due to the strange shadows on the left hand, since one would expect the underside of the arm to be lit up due to the magical ball; however, since it's a photograph you're working with I can understand the difficulties involved in changing it. The text is very well done, but I can't see a strong focus or flow due to the competing imagery of the guy's face, the right-hand magic-ball, and the text. Overall, amazing graphic.
Now, this is my first graphics work in about 6 months, so I'm likely to be quite rusty.