Welcome Dr. Wolf!
I love hand-drawn maps as well - is this your work? I like the mountains and the nice black line on parchment look.
I see where you're going with the forests, except the "copy past move or multi tree brush" (whatever you used) is too obvious. Even when I duplicate multiple copies of tree groupings (and I do that sometimes too) I create more than one grouping of trees, and sometimes copy and rotate as well. That way placement looks far more random and realistically hand-drawn appearance.
Other than that, nice start!