What you need:
tiles (mosaic tiles and/or ordinary bathroom tile)
a round supawood shape
quick dry wood glue
white tile grout
You need to first decide om a design for your mosaic board, draw the design on your supawood board with a pencil. Once you have a design on your board, you need to decide what colours and tiles you want to use in what areas.
Use a tile cutter to cut the tiles into pieces. Arrange on the design sticking them on with wood glue, using a paint brush to spread the glue evenly. Continue till the whole board is filled with tiles, then leave to dry.
Mix tile grout in a plastic container, adding a little bit of water at a time, until the mixture resembles toothpaste. Use a teaspoon to spread the grout thick over the entire surface.
I like to use my fingers to work the grout in between all the pieces and on the edges, then wipe off any excess with your hands. Make sure you don't remove the grout between the pieces.
Clean further with a damp cloth.
Leave overnight for the grout to set, then clean with window cleaner.
There you go... you have a mosaic potholder.