I would shorten them, assuming you have the ability to withstand shortening, for example, if shortening them would expose your chin, dont. theres some paint techniques you can use to make them LOOK shorter in that case, but it wont be screen accurate, but itll fit your head, wich is more important to you? screen accurate or fitting? (depends on case, some arent worn) if you can shorten without showing your chin, go for it. just be careful and cut cleanly.