>>7228
"Get decent at drawing cute girls" is pretty broad. When studying another artist it's good to have a more specific goal. So you identify some aspect of their art that you wish you could do, and focus on observing how they do that particular thing, and how it differs from your work. If I wanted to learn how to do line art like in the OP image I would look at it and observe the properties of the lines. How thick are they, what color and value, where does the line weight chance, how sharp are they... Etc. Cross reference with your work and try to apply it until you nail it. You can get more analytical about why they made certain decisions if you want but on a basic level that's all there is to it.
Going by your work though you must already be doing that, if just intuitively. I'd say you're even quite good at it, there are many elements you would only have arrived at through study. If there's something you feel that you're struggling with I don't think it's
specifically to do with studying other artists. If I were to venture a guess I'd say it might be compositional principles, that stuff is pretty abstract and I found it a difficult threshold. I sort of recognize the struggle in taking away something logical from your observations. Unfortunately I haven't found any comprehensive guides to it, your best bet there is to just think about what elements a picture has and try to break it down in smaller concepts.
There are a lot of tutorials floating around that can give you an idea though. I think the Etherington brothers illustrate some things pretty well.
https://theetheringtonbrothers.blogspot.com/2017/09/how-to-think-when-you-draw-character.html
Sorry for how lengthy this got. I agree with the other guy though, you definitely should give the comic a shot right away. Even if you don't feel that your art is up to snuff you can just draft some pages and see how they read. No pressure to make something polished immediately.