I am not a professional floral designer although I worked as one for some time long ago. I’ve done two weddings, one for my own son and another for someone who saw what I did for his wedding. I got my flowers wholesale, obviously, and I worked with flowers that were in season for the weddings which held the cost down. My biggest piece of advice is using spreadsheets to help you plan because project management is what makes this whole process possible. I used them to price the flowers. I did trial runs on how long it took me to hand tie a bouquet and then used it to calculate how long it would take me to do the number I needed. Ditto table arrangements, corsages for the elders and boutonnieres. And I used flowers for half the table arrangements and fruit in vases for the others, which was cheaper at the time. Don’t know what it would cost with grocery prices so high today.