I would first see where the job opportunities might be and them maybe combine a design school and your work. Kinda like an internship with pay. Being that you have worked in a flower shop in the sales side is actually a benefit to owners like myself than just a person that would like to be a designer.
There are plenty of talented designers on this board, I would guess many however have never been to a design school. Hopefully Carol Bice will give her two cents on your question, I would value her opinion the most.
Cherrie is in westminster co, and BJ Dyer is an awesome humanbeing, he will be honest with you!I would ask a local person, such as Cherrie from Cherrie Blossoms in Manchester, CO or BJ Dyer from Denver, at Bouquets for some local advice.
I am sure they are in one of the wire serivce directories or call directory assistance for #.
and she's really nice!!Also you could call Lynne Moss in PRatt, KS to discuss her views on educational opportunities around you, she is a past president of AIFD and reconized educator in the floral industry.
The Flower Shoppe, Pratt, KS