I've recently played through Sibelius' beautiful, easy impromptu no.6 in e minor. It is two pages of pure delight (and excellent sight-reading practice for my fellow beginners):
I thought I'd try his more challenging impromptu no.5 in b minor. It is composed entirely of scales in both hands, with an additional voice which speaks only in octaves in the RH. It's very pretty and delicate:
However, I'm having trouble coming up with the right fingering. No, I don't have a teacher. Yes, I practice my scales.