At times the text isn't easy to read and kind of boring, and there's a noticeable use of the Lasso tool in photoshop grouped with a feather effect of about 10 pixels or so. That in itself could be good for some effects, but using it too much isn't a good idea- particularly with your abstract backgrounds, which, if grainy, can have a not-so-pleasant effect on the subject of the image (particularly if the subject is a smooth image). However, your selection of image isn't bad at all. The use of the same effect in the backgrounds isn't great for overuse- I recommend you tone it down in use.
Made concise, what I'm recommending is that you explore different types of styles from the one you used for these banners and see what happens. A little variety could never hurt. Good luck- you've done pretty well so far.
