See now, I wouldn't take peoples comments so literal and use everything they've said, Taking onboard the comments and tips is all good but you don't have to make an image in their view. Now Again I like what you've done with the background ( Orange bit, clouds, main text ) The josh baker on the two top ones should be moved to the bottom. I'm guessing when you did the blue one you wanted a contrast between the piece.
As two colours are quite dull, And The circles and lines ( bottom right ) imo look like theyve had thought but been placed there so that space could be filled because without them it would look empty, All I can say is try using some blending techniques on them and hell add colour. Personally I would have choosen different shapes to fill thoose areas, But meh I'm not a great designer.
Overall It looks nice and is getting there, Hope what I said helps lol.