Trimming a landmass to a symbol
So I have a problem. I created a map in another program, but didn't like the functionality of that program so I turned to ProFantasy. However, I like the landmass that I created in the other program and have already developed much of it on paper. Now I need to recreate the exact landmass withing CC3. I was able to take the landmasses from the other program and convert them into bitmap PBGs and therefore import them into CC3 as symbols, but I don't know if there is a way to go to a landmass from there. Is it possible to trim a landmass to a symbol's borders or is there some other way I can get a landmass to look like my on paper design? Any help is appreciated.
Comments
https://www.youtube.com/watch?v=B8Fvz98lJ7Q&t=189s
I did buy a tablet to use with CC3/3+ because I think that will provide better control over fine details, but I haven't set it up yet. Have never used a tablet and electronic pen, though, and it looks rather daunting to set up, so I've been putting it off!