Well. [Dear Merlin why is he bothering to humor her?] First off, one would have to say "up" to make the broom come to life on its own. Then you'd mount it and you'd push off with your feet. If it doesn't respond to "up" either it's not a magical broom, or you're not magical yourself.

[Well, to be fair, Draco's not much of a seasons person in general. He smirks slightly at the thought of snowballs, if only because this past winter he helped a certain group of deaged adults build a snow castle and toss snowballs at bypassers.] It's just snow I'm not fond of. Winter means Christmas, after all.