Aahh thank you! Unfortunately there’s not a lot of good line art tutorials out there… Mostly because I think line quality varies from person to person. I can definitely give you some suggestions though!
I tend to work on big canvases and then resize the image when I’m done (unless I plan to make a print of the image later, then I’ll keep the full sized version too). You’ll notice your lines will look a lot cleaner than if you viewed them in full size.
Keep in mind though that if your lines are messy at full size and you plan to print your image, you might be able to see them on the physical copy. It’s good to zoom in and clean up if you’re worried about the messiness showing.
Line art is very tedious and I tend to be meticulous about it, which isn’t always a good thing. I don’t know how many times I feel like my lineart is too stiff compared to the sketch itself. I try to get my strokes as close to the original sketch as possible… That usually means me sitting in front of the computer, making one stroke, and ctrl-z-ing until I’m happy with that one line. Pen pressure and brushes that can capture it really well are also my best friends.
Sometimes I’ll get a line just where I want it, but it’ll be too big because I press really hard when I draw/write. So I just go back and taper it with the eraser until it’s the quality that I want. Unless it’s part of your style, you don’t want your lines to be all the same size. It’ll flatten out your drawing and it will lose dimension.
I hope this is helpful to you, anon! Line art isn’t easy, and it’ll take practice and patience. But I know you can do it. (: