>>2257748That's bullshit. I have sketchbooks (100 pages each) filled with hundreds of straight lines per page, which was the only thing I did, other than midpoints, for SIX months. It dramatically improved all of the drawings I made that weren't specifically made with "straight lines", including softer rendering exercises, curved lines, discontinuous lines, etc.
To anyone worried that it's wrong to just practice one thing- DON'T. If you are ACTUALLY putting a lot of effort and concentration into that one thing, it will apply to others.
Don't be a jack of all trades because guys like this say you should. No one is able to pick up all the skills they need to at once. Eventually they will come together WITHOUT you having "forced" yourself to learn them all at the same time.
>>2257745this.
No one gives a shit if you have fun making wrist drawings when you need to (details) or if you're just working on a smaller format. But for the love of god, when you're practicing the basic, STAND UP, AND DRAW WITH YOUR SHOULDER. Don't hunch yourself over a drawing while drawing at the dinner table. You're going to ruin your neck and your wrist.