Do these centerpieces look nice?

I think maybe some babies breath to make it look a little fuller other than that i think they look great

Hey!
My advice is a taller flower in the middle, then work in shorter ones around it.
Cut your stems shorter , so that the flowers will take up more space and look fuller.

Cut your leaves off the stems , so that you will have more to work with, work them into the base of the arrangement.

Go back with the taller buds and work a few throughout to give some height.
I agree, you need some filler.
Baby's breath or a smaller flower of some type.

The shorter arrangement , in my opinion, looks more complete. Cut the stems on the taller one, so that they match.

Work in some ribbon loops or a bow to finish up
I'd also suggest, add another color for dimension.

I like the idea of having baby's breath to fill it out more!

They look great so far, Mallory!

I agree with the PPs. Some baby's breath to fill it out is a great idea