Thank you again for the comments!
The things I've focused my attention on is paint additives, light box building and how to make a wet pallete. Many skilled painters have made great tutorials and posted on youtube. You guys helped me look for it, and for that I am grateful!
I also bought new brushes. In the range from triple zero to size 2. Maybe I can get some iris-painting action now xD
Right now I think I'll invest in the Reaper Master Series line of paints, OR keep mixing my own colours and stick with the Vallejo Game Color, which so far has served me perfectly. I keep notes on my ratio when mixing so I get it right next time.
I have realised that the washes is a must have. And I'll make sure to get Badab Black, Devlan Mud and Ogryn flesh from GW.
Today (saturday here) I'll paint all day
I'm feeling a little schizophrenic about what style to paint in though, since I both like the cartoon-style and the gritty look I've made the Convict Gunslinger in.