I just got a Wacom tablet to work with Photoshop so I decided to use it on a composite portrait of my friend. Any comments on it? The color ? The composition? The overall feeling?
A few fine points:
The two images used were taken from different angles... it doesn't seem like the dock and her feet meet "naturally." And her feet seem to be "floating" slightly. Some of that is due to the shadows you created.
The two images have different lighting... not horribly, but it hurts the "believability."
The selection along her hair is too straight/smooth... this is probably one of the hardest things to do. (The Perfect Technique for Masking Hair - Tuts+ Photography Tutorial)
And, IMO the added lens flare is a bit too much and a bit too obviously faked.