Hi Omri, how are you?

I'm so pleased to see a new map from you! It looks great! Yeah, I know, that's not constructive.

You're not the only one wanting to find a better way to do forests - doing one tree is easy, but an entire forest... I usually just copy and paste the same tree, but not a finished one, just a very rough one. I make it into a brush. Then I paint over to add some detail and variety, but not too much. I guess it comes down to creating some design assets first, and then placing them on your map. I try to keep mine looking very generic, so I can easily customize the look by painting over. If you make more than one brush, you'll get more variety, though it requires some switching between them while you work, which takes more time. But, as you've probably noticed, the more effort you put into something, the better the end result.

You can also add more distinctive trees around the edge of the forest to pull the eye away from the generic lump of trees.

I'll let you know if I think of something else later, I have to get to work now. Have a wonderful day!