Air dry clay shell mosaics! Brought to you by my creative team. Grab a handful of air dry clay. We love Crayola Model Magic Grab a lid or cup to shape your clay. You can also use a cookie cutter. Make sure your clay is about 1/4 in thick. Press shells and small rocks into your clay. If the rocks fall out, glue them later. You can also use a fork, etc. to make designs on the clay. Once everything is dry and secured, paint your mosaics! We used liquid watercolors. Hope you enjoyed the tutorial! :) Please let us know if you try it!