I would just practice and experiment by yourself. I've lurked the forums for a while and have noticed you in particular. You're a kid who always wants tutorials, you want to copy other people's stuff in order to "get better." Maybe you should just start with a pen and paper, go grab a sketchbook and draw stuff around your…
I always feel im doing everything wrong and I love tutorials simply because they give me something to do and help me improve my own workflow, I also try to recreate other peoples work to see how close I can actually get it