Soooo, seems I'm on a roll today, owed to a small tutorial by our illustrious Torstan which revealed the wonderful option of "brush opacity" to me. Don't laugh. To me Photoshop is so huge and varied in its functionalities that from time to time I discover things that have been staring me in the eye all along, things that solve problems and questions I couldn't get around earlier. Another big thanks goes out to Max for his help with pushing me in the right direction regarding oceans and texture layers.
So, hills have been placed and the locations for the hand-drawn craters have been marked.
Next: Craters, then forest. Then the funny part will begin: coloring!