After this question was recently posed to me, I thought I’d type up a more in-depth answer.
Ultimately, it really is just a case of: start. There’s nothing stopping you. You don’t need anyone’s permission. Just put pen to paper and let fly.
I think the major stumbling block for people at that early stage of things is the concern that what they put on the page does not do justice to what is in their head. You, of course, want it to look as good as the comics that inspired you to take up the pen. You’ll draw a few pages and decide it’s not worth continuing because your work isn’t on par with the big