Beautiful setting! I think I'd look around for a table runner that has your wall color along with a couple of colors found in other parts of your home. That would be a start. Can't tell exactly, but is your light fixture a tad too high? I think the standard is 36" from the table top. Very, very nice.

Home Goods has many bright pink peonies in silk flower arrangements.

Love the blue and white.

What’s going on in an adjacent room? You can relate your dining room to the hall or living room by repeating a color used there. A pretty bowl, a floral arrangement, a grouping of candles, a green plant? I have a hand painted cachepot with an English ivy in it on mine. Sometimes I have a blue and white porcelain vase with fresh flowers but keeping up with them is a commitment .

Repeat what's going on with the chandelier but at table level (metals, glass, candles.)

Big pot of yellow flowers that looks very real.

As some have suggested, a good looking flower thingy is all I can think of. That wall color though! Just gorgeous!!!!

The room looks great. A colorful glass bowl on the table that would pick up the sunlight would look nice.