Let the crochet do the work.
Yes. A crochet bikini cover-up is already the centerpiece of the boho beach look. You don’t need to do much.
Wear it over a solid, neutral bikini—white, tan, or black. The crochet pattern is busy enough; keep the bikini quiet. Slip on wide-leg linen pants or a flowy skirt if you want more coverage, but even cutoff denim shorts work. Add a wide-brim straw hat and maybe one pair of gold hoop earrings. That’s it. No more jewelry, no scarf, no bag with tassels competing for attention.
Let the texture of the crochet be the story. You’re already at the beach. Don’t overthink it.
