I would sash between the white and not cut the blocks down. You have some great background space to be creative.

I wouldn't make them smaller. Put sashing in between each block so they really stand out

Grandmother Flower garden, my version
 

here is finished top, I decided on both borders because I wanted the quilt to be bed size. For now I am adding it to the other 6 tops that are in need of quilting.

That looks lovely! The extra sashing gives it a bit more 'room to breathe' as well, and the borders look great!

Very pretty...ive got quite a few blocks made then have to decide where i wanna go with it...

suggestion for quilting- Leaves and vine in green thread connecting the flowers. Very pretty! Nice work!!!