Substance Painter, Substance Designer, you can get them from allegorithmic.com for $20 a month, until you own it. (Indie license)
If you make over 100k a year, then you gotta pay more.

I just whipped this up yesterday in about half an hour. it makes texturing so easy, substance painter comes with a bunch of materials that you can use to texture pretty much anything. Then substance designer makes it easy to make materials from scratch. Its designed for PBR materials, but you can it for anything really. What engine are you using?

http://www.littleraingames.com/concr...owfinal_01.png