Hes tips were:
Use overlay texture to give some depth and dirt
Add some noise and stuff.
Rust
The second pic, that has two images, shows my plain texture and then the another one with some tips. Like Revelli said it looked hand drawn and stuff..really cheap. So he kindly adviced me to use some noise and blur and then add some overlay texture to give it some worn, dirt and rust. Shadows are from my own head and I did all the paiting job myself. Revelli just gave some ideas for me
I was thinking about adding dirt and stuff before, but didn´t know how, so it was really usefull to know that it can be done with overlaying texture and noise.
So thanks Revelli!
(Oh and Suzuki model wont be continued... my inspiration went away with it, haha!)