Each coaster measures 4 inches by 3 1/2 inches.
I made a custom stencil for the logo (you can read how to do that here).
I used Krylon paint this time, and gently sprayed in layers.
Each coaster got several coats of clear acrylic seal, for water repelling.
I am very happy with how the coasters turned out, and I love how even the paint job is - I had been worried that using spray paint on a small surface would lead to a mess, but as long as you tape off and lay your project down on newspapers, you should be just fine!