The text looks out of place to me. It says "Paradise Looking for" to me.
The signature looks like it should be closer to the bottom edge. The plants don't look like they're on any sort of horizon - like the user above said - there are some issues with composition.

The lines on the stock are really jagged and don't fit the smoothness of the background. I do, however, really like the colors in the background. It's very serene.

I think the wall looks nice, but the text really isn't necessary. As a previous comment said, it also looks like, "Paradise Looking For" to me. The colors of the text are also too different from the colors of the wallpaper, making it look quite out of place. The blue used on "paradise" doesn't have enough contrast against the color of the flare and background too.

The text aside though, the wallpaper is quite nice. I really like the background and the way the clouds/fog were incorporated.

This is a good one! I think others are being too critical, this is a style you don't see often! I only think it needs a few improvements to go from good to great. First, the text needs to be tweaked in color to better match the background and second the character image has some aliasing issues, it's blocky in places. The last one is probably out of your hands given that you didn't create the image, however it's good to know people will highlight it as an issue when making your pick.

Other than that I love it! I love that fog effect! Really cool! That green tree is fantastic! love the leaves in the foreground, really gives it some depth! Fantastic work overall! Have a favorite from me!

Just beauty. =)

Omg love it!! Great job. The colors are calm and the girl is so pretty!! Also the background is just awesome!! Totally going to favorite this.

It is so serene. I love it.