How do I get straighter lines

I seem to have maxed out with this. What’s something I can do to go further.

Aside from using a ruler, use your whole arm instead of just drawing with the wrist. Takes some practice but is absolutely worth it. Especially a good skill to have when working on big or wet canvases were you cant rest your palm on the surface.

I’m doing the whole arm thing, is it really that bad?

Its a practice thing. There is also nothing wrong with using a ruler.

Except for it looks unnatural.

Then ask yourself for what do you need them then?

And get yourself a bendable ruler too, next time you’re shopping for art supplies.

I’ve got a wooden one actually?

Calling it a “flexible curve ruler” may give you a better idea of what it does.

Are you asking us if your ruler is made of wood?

Anyway, here’s a photo of the flexible ruler I have.

You can bend it in almost every shape you need or use “almost” straight.

Okay, I’m a little bad at English writing, do to my Special Ed Coach doing it all for me when I was a kid.

Also the artist I’m apprenticed to answered my question, go Bigger!