Don't worry if perspective isn't really your thing! We can't all be a master at everything. As long as you make an effort and know the basics, I think it's fine.
That's why studios have massive amount of people for their companies, because everyone has a specialty (some artists are good at anatomy, others good at BGs, others good at coloring, etc) ! But since most webcomic creators are one-man teams, we have to do the sketching, lining, coloring (if applicable), writing, and so much more! So it's normal we would be weaker at some things than others. But always keep in mind that if there are programs there to help you, use them! They are there to help improve the quality of your work if you're lacking on a certain aspect, and that's okay. Of course, you want to make sure you only use work that's OK to use. Like, you don't want to trace or use a photo that isn't your own (since it's not your own work and that's not cool), unless you bought the license to use it.