I made some programmer art. Here are my free textures, use them for whatever you wish. If you don't mind, please give me some criticism on them and what I can do better. I was aiming for a TF2-like cartoony look. They are all seamless.

Nice job!

I guess it depends on the game, but I feel like they are too bright - even for TF2. Maybe once shadowed a little ingame they'd look better, but at full brightness the green one practically blinds me! The brown one is also too bright.

They tile noticeably, so even though they are 'seamless', they are also noticeable. Did you view them tiled? I have a small compact tool for Windows that I like to use, because it can rapidly be launched without bothering to interrupt or launch a larger program like Photoshop or Paint Shop Pro - I've uploaded the free tool here on GameDev.

Copy+pasting the brown one into that tool, this is what you see:

(The red box is added by me to highlight it)

Each repeat of the texture has four 'pinched' spots of noticeable tiling artifacts.

Not being a great artist myself (mostly into programming), I just finagle around with a texture for sometimes an hour or more reducing the noticeable spots as much as possible. Once you get rid of one thing, the next most distracting artifact suddenly stands out really badly - it can be annoying getting rid of them.

In your case, I'd offset the texture so the flaw is in the center of the texture, copy a part of a properly textured area, and paste it over the flaw with semi-transparent edges to hide it.

Wow, thanks for the great input! I learned a lot. Your program also is very useful. You are like me, writing a program for every little task just because.