Pull the image to the map layer, right click under Advanced and set "Is Drawing" and set dimensions to 2800x2800 pixels (assuming a Roll20 page with a 40x40 hex with 70 pixels for hexes).
Yes. When I wrote "not to be used commercially", I mainly meant to not use them as assets in Unity games or reselling them etc.
Thanks! I'm still working on some stuff for more, but work and RL are currently keeping me busy, so they will be in progress for a while longer.
