You're on to something really special, in my opinion. Even though you're experimenting and trying out lots of different things, I can always tell if it's a Llannagh map.

Maybe, for confidence, it'd be good to stop looking at other maps for a while and make something finished. Doesn't have to be big, just a little island or anything that comes to mind. Something that works for me when I have a creative block is also to stop caring about whether the result will be good or not. Helps me relax.