Well, I can cheerfully say that you have two things going...
one is that it's simplistic. Two is that the shapes and lines fit together very well.
I wouldn't have chosen orange and dark blue-ish, though. Try orange and white or orange and some... orange-ish color. Yellow. that's the one.
If you're using photoshop, now's a good time to get started in the art of reading tutorials to learn what's going on. All in all, it's a good start. Um... yay...?