Do most florists allow you to create an arrangement with only a few flowers?

i don't live in the same city as my mom, and for mothers day i'd like to order her an arrangement to be delivered to her. but all the arrangements i see on the local florists websites have a ton of flowers and are way more than i can afford (i'm a student). i know i'd have to call to find out for sure, but do most florists allow you to create custom arrangements with only a few flowers? i just want to send her something simple and pretty