Painting model railroad backdrops: Sky and Clouds

Bernard Kempinski describes some tips and techniques on how to paint the sky and clouds on his O scale model railroad backdrop. The video was getting a little long, so I edited out the discussion of why I did not cove the corner by the planned balloon camp. There is a window adjacent to that corner. This window is a possible fire escape for the room. So I did not want to block it with a section of masonite I would use for a cove. Solutions that involved a partial cove just didn’t look right. So I plan to rely on the Lowe’s observation balloon to help hide the uncoved corner.