One thing I noticed is that the font doesn't have the same level of diffuse edges that the hand-drawn portions do and I find that a little jarring. Perhaps a little blur and possibly fine-grained shower-door displacement on the text would help to make it to match the rest of the image. The same thing applies where the text cuts the background (e.g. Red grounded Plains label across the river); the sharp edges on an otherwise diffuse line just looks unfinished.