spray painted bottle caps, paint a tray white, arrange dry caps on dried tray, next use "acrylic water" to pour over the caps. 2 part epoxy is sold at HL & Michael's, but it is cheapest at Walmart, in Floral Dept. Follow the directions, mix the compounds and pour it on. It's self-leveling, which is great! The tough part is waiting 48 hours, because it cannot be disturbed at all! The acrylic hardens without incident & is ready for use!
A great tip for making wreath: go to the plumbing department at Home Depot or Lowes and grab a six foot long piece of foam tubing for $.97!! Snip the length you want with scissors and duct tape the ends together. Voila! You have a really inexpensive wreath form. You can probably get three to four wreaths out of one piece.