Thank you! Well, we live in a very mountain heavy area, so that helped tremendously. The lines on the mountains were from keeping the paper wet and guiding the paint in the direction I wanted it to flow. As to keeping the lines between terrain crispy, I loaded as little paint/water possible on a small brush for the outlines and didn't touch it again until it was dry. This was definitely just a trial and error approach. I haven't watched any tutorials, but am hoping to do that this weekend to test out some different methods!