Pattern ideas for a modern/abstract tapestry faux headboard?

Hi all, I just bought a new bed frame and it turns out the headboard is super low when there are multiple pillows on the bed. I was thinking of making quilt tapestry for the wall for art and to look like a headboard. Anyone have any ideas?

Pic 1 is the quilt tapestry at my sewing class studio which is fun and gives a sense of what I’m thinking, pic 2 is a blanket online but I like the style (any similar patterns to that?) And pic 3 is my bedroom and the low headboard (bedding will be changed to green linen)