Some good stuff you have there, one thing i would suggest though is not to use blue as it's a bit similar to the team we share the San Siro with
Also, if you're making shapes like the crescents in the first image then it's best to make them in Illustrator first. Creating anything in Illustrator makes it in vectors which means when you scale it up or down it'll keep it's sharpness and the edges won't go all pixelated. If you don't have Illustrator then make them alot larger than you need in Photoshop, this way when you come to scale them down to the size you need it'll keep the shape quite crisp.
Apologies if you know this already.