Curtain embellishment ideas?

I just put up white curtains and now the living room looks washed out. I was thinking of embellishing the curtains but don’t have any real ideas.

I would like them to look classy, homey or subtle. Nothing too outrageous- just a little pop to keep them from blending in to the wall too much. I can DIY almost anything- just no sewing as our little machine couldn’t penetrate the fabric.

We have dark wood furniture, wooden floors, mid-century lines. The colors are light blue, cream and deep wood tones. It’s done in a mildly ‘beachy’ theme right now with mother of pearl candle holders and light blue bird-themed art.

Any ideas or links?