Um, those aren't proper bumps, those are greyscaled diffuse textures :/

The reason Crowpaths bumps look so good is because he does them properly. Repaints the texture in grey scale, pretty much.


Heres what a bump should look like:

Diffuse:


Bump:


I painted the bump map FIRST, and made the diffuse texture using it. Best way IMO.

However, when making a bump from an allready made diffuse, desaturate it as Sinergy said, but up the contrast, and really accentuate parts that would normally stick out, and make sure things act as they should. Using burn/dodge plus blurring is a quick easy way to do this. You don't want it overly noisy ingame.