Elaine, here is a great tutorial on a bed canopy that attaches to the wall. Good luck with this! https://www.hometalk.com/25863735/a-bed-with-canopy
Here's some more
Elaine: these ideas may help
Here's one idea: https://www.hometalk.com/4145694/diy-no-sew-table-cloth-bed-canopy-tutorial
A HULA-HOOP, CURTAINS & A QUICK TURN BRACKET. Slide curtains onto the hula-hoop, insert the hula-hoop into the bracket & screw the bracket into the wall. Position the curtains as desired.