Bah, don’t worry about that sort of thing!
We want people to have fun with the challenges, not take them super serious. But beyond that it’s a method of practice, meant to sharpen your skills. We don’t expect people to be pros or anything.
If you’re having fun and doing more drawing than usual or coming up with interesting ideas or working on your speed or WHATEVER then that’s all we could hope for. We welcome all skill levels.