Nice work on this and it's not cheating at all to use CC3+. Whatever gets the job done for you.
I like your mountain areas. They look great. However, a couple of things to consider for the future: With your rivers. although they do meander, in some places they feel a little too straight or evenly curved. I think they'd benefit from a little more wiggle! Also, you can see something of a repeating pattern in some parts of your forests. I'm not sure how CC3 works and if this is just a downside of the software, but if it's possible to move a few trees around here and there to break up the repeating lines, that would help the look of the forests greatly.
That aside, it's a good map and I hope your players enjoy it. Have some rep.