Apologies if the title is vague. Im bad at wording things to begin with, and im even less sure how to describe what im asking here in a title.
Im working on a little personal worldbuilding project. I want it to, ultimately, be good, at least fairly decent, but I haven't actually done anything like this before. So far it looks like this, getting the coastlines marked over the original MS paint map, an edited form of something from an alternate history forum worldbuilding project.
b894a7725a.jpg
Made in gimp
Im somewhat worried then, given the lack of experience. I dont really know how I should proceed given that ive not done this before. Already im not exactly sure the level of detail on the coast looks quite right for how large its supposed to be, the big island with a complete coastline being somewhere between 1.5x the size of Borneo and 1/2 the size of Australia. And I really dont know much about the natural effects of rivers and erosion that create coastlines, how things really should look.
Should I try and make more, smaller maps, to practice, if I want this one to be good?(Say, of smaller islands visible)
Is there anything I should study?
Is it fine to continue on with this and just tweak and edit it as I go along, and go back on things, or should I not try it untill im better?