We decided to start with the Alexandra's room. She really wanted to be a part of her decorating, so we told her to invite a friend over and they could paint. (this also got us out of having to paint the entire room - a wonderful benefit!)
They had a really good time. Of course, Alex had never painted a room before, so there was a large learning curve, but they did a great job for their very first time!
I tend to have a difficult time letting my children do big projects like this, because I want them to do it MY way and have it look the way I want it to. I am really trying hard to let go more and let them do these things. I want to give them the skills they need to be on their own. I also feel that letting them do more will give them more confidence to try new things and take on bigger challenges.
That is a lot of philosophy on painting a room, but I think it is true. Do your children work on big projects at your house?