It doesn't have to be a placemat; but it helps if it's made of wicker
Cut it down to the size you want
Cut the corks with tube cutters (it's a lot easier than with scissors or a knife)
You can cut them in half, but I cut them in shorter lengths so my mat wouldn't be too high
Here they are :)
Start hot gluing!
Don't forget to glue them to each other on the sides as well. Make them really stick!
Glue around and around and around
It's hard to fit some of them in...You'll have to squeeze them in there! I had to rearrange some, putting some slightly bigger ones here and slightly smaller ones there. I also had to carve out some of their sides to fit them in
It was tedious
Trim off any excess
If you used a wicker mat, go around with a lighter and singe the edges out of view
As you singe, press the melted wicker down to close the edges to keep them from unraveling