the first one is cool but mainly because of the colors and txt, if u had some more depth itd be cooler second one is also very flat, work on ur depth, there are some tuts with good depth you could try but u dotn need to do the whole thing, just check out some styles to get new ideas. also i think a photophilter or gradient map would help as the blue doesnt really go into the red nicely, unless you play off the contrast somehow (i've dont this too red on blue though, looks nicer when colors are similar imo)
Hmm, I really dont like that 3rd one. You've clearly just discovered vector brushes, and the brushing behind them is terrible.
hmm actually i just made it for 5 mins i wanted to try the brushes out but anyways its your opinion btw what about the 4th one tnx for the comments