Tamara: here are some ideas to get your creativity started
Maybe like this https://www.hometalk.com/43530822/make-a-beautiful-removable-bathtub-cover
Are you trying to make a wood enclosure around your bath tub?
Do you want to cover a tub with a wooden piece or clad the surround around the tub in a wood finish?
I’ve seen lots of great ideas on Hometalk for covering a tub surround -- did you check around using the search bar at the top left?
Wood is affected by moisture, so you might want to consider a tile or vinyl product that looks like wood, but will hold up to a wet area.
After the wood enclosure is in place, do you still want to continue using the bathtub, or is the wooden enclosure intended to cover the tub up more permanently?
Here is a post that might help - https://www.addicted2decorating.com/diy-tub-skirt-decorative-side-panel-for-a-standard-apron-side-soaking-tub.html
Make sure you use cedar or another water safe wood.
I agree with what someone said above, I am not sure I would use wood where there is moisture present.