Here's how to paint your map onto the parchment paper.

1. Export a map of your choice, at whatever resolution you like.

2. Import it as a custom texture.

3. Use the adjustment sliders to rotate, resize and place the map over the parchment paper.

4. Paint it onto the paper. It has a clipping mask so it will only paint on the paper. (Foreground)

5. Pro tip, when you paint it onto the map use a soft brush, softness 100%, then start from the center and go out. You don't have to go all the way to the parchment paper border.