How would you do that?

spexel

So this is my low poly so far in substance painter. I just threw in some smart material in there, nothing is close to final here.



I want to add some bumps on the handle using the normal map. What software would you use to do this, how would you do it or do you guys know a good tutorial for something similar? 

ActionDawg

I'd make a heightmap in Photoshop, project it onto the mesh, and convert to a normal map.