Uhhh, I recommend looking on Brusheezy.com, deviantart.com and also look at the link Zerosun gave me for the brushes he used in his recent tutorial. Splatter brushes are easy to find.
You did not phail at all. The C4D blends very well, and the colors look great. Although the best composition is V4.
I really do like it. You've used a lot of colours without making it look really bad, which obviously means it isn't monotone. You've done this very well and the colours compliment each other. Since there are a lot of effects, try a version without a border?