I don't much like how her feet are muddled with the tower (?) behind them. It's a very cute and no doubt very special picture for its personality and its capture of that particular moment. I cannot help but feel that there must have been times during the ride down when the background was more fortuitous, though. Obviously you have a problem in that they're pretty light, and it looks like most of the other available backgrounds are pretty light, but was that really the only patch of trees to place them against?
On the other hand, I cannot imagine riding all the way down with my neck craned around waiting for that perfect background to appear.