Don't worry about staying in the lines, practice. I made some booboos with my last two balloon groups. I think I am getting tired, but I put the shadow where the light should show on the first balloons. But I didn't give up on shading. I found some colors I would never have put together, but found they were fine.
The boxes are demonstrations of what only two colors blended together can do. I wanted the 2nd box to be sharper and it definitely is. I think something between the two boxes in darkness of color would be best. But it sure was fun coloring!
I am so happy I could actually participate in coloring Day ONE on Day ONE. Watching the videos several times really helps. I think this class would be great for anyone. You can still register at http://www.onlinecardclasses.com/. I can't wait for day rwo.