One important Tip : Never use Opacity to blend in pics with the BG. Text doesnt match the colors of the BG, and like I said, the blending isnt good due to the opacity. But it is better that you went to G-D, cuz its better then your previous work. Just work on blending
Opacity isn't always a bad thing, If you use it, make it like 80 - 90%. The main cut looks boring and none of the pictures match your background. The text looks pretty good, try to make your banner match the text.