1. throw your graphic tablet away, it's not a tool to learn to draw.
2. One of the best tips: start by drawing the basic shapes of the BIGGEST elements in your picture, and then move to the smaller.
So if you draw a person, draw the torso area, then the pelvis, legs and arms.
It's a lot easier to balance your shapes in relation to the largest one than in relation to a couple of smaller ones or from a small one to another small one.
3. BUY A.. that... thing where you click on the top and lead comes out... you know like a pencil you don't need to sharpen. FUck I don't know the english word for it. Buy that, 0.5mm, H.
That's for comic art. Ultimate precision and clarity.
Don't ever use those heavy 2b, 3b, 4b bullshit, that's for making drawings entirely with lead when you're trying to learn how to do some oil painting.
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That's all I can think of for now that I know lots of books don't mention. And if you want to learn how to draw people, buy a sports illustrated or whatever and draw every page and I guarantee that afterwards, you'll be fucking excellent compared to when you started, but hey no one ever does that.
Including me.
DAMN YOU NINTENDO DS, WHEN WILL YOU BREAK SO I CAN BE FREE OF YOUR CURSE