Im new to sketch up but im trying to learn as much as possible. When I try to print whether exporting 2D or PDF or JPEG or just straight up printing, in the preview and final form whether JPEG or piece of paper it shows up as a see through sketch and not an actual model with surfaces and colors. I have been trying to figure out how to fix it or what to press for the last 4 hours!!! PLEASE HELP! Im using windows btw. Thanks!