This is not a guide, just a demonstration of the power bump mapping can have on a texture. For my Golf Mk7 GTI project, I've been forced to restart using a better base model and interior, the downside being that the interior had awfully low quality textures and would look poor in GTA V. As a result, I've set out to scratch make textures for the dashboard and decided for once to have a go at making my own bump maps without the use of an external tool.
Many don't believe in bump mapping and I wish to show why it shouldn't be neglected. Below are some screenshots of the effect it had, rather jaw dropping I'd say.
The texture & rough bump map
The result, rendered in 3d without the bump map
The result, rendered in 3d with the bump map applied
For those curious on the workings, I will post guide will be posted at a later stage one how to create such bump maps so you needn't worry.