OK, so I am making a new space themed map. However, Valve doesn't have any space-station style textures included, so I am going to need to make my own. The problem is, I have no idea where to start. I have Photoshop Elements 8, and am pretty adept at it. If I could have any tips from people who know how, it would be great! Especially at making the texture TF2-ey, and just plain old starting off.