Has anyone on here DIYed their wedding flowers (fresh)?

I am having flowers delivered in bulk from a supplier two-three days before the wedding to allow them to open, and me to put them together.

I am doing 8 table arrangements, 5 bridesmaids bouquet, and my bouquet from a mixture of white flowers (growers choice), light pink roses, as well as white hydrangea, there is greenery included in the growers choice- which should be semi-arranged in twelve bouquets and I can adjust/add to them as needed.

Anyone done this before? Have any tips for me? I’m not willing to spend 1-2k on flowers... and i don’t really like fake ones unless they are really realistic which is pretty pricey as well, so DIY it is for me!

Tips, experiences, comments all welcome!