Setting slate on edge is a great way to create a textured surface on your mosaic. And if your slate pieces aren’t too tall you can set them directly into your bed of tile adhesive/thinset like this!If your slate pieces need a bit of extra support there’s an additional technique where you can make sure they are stuck to each other as well! I teach lots of techniques for working with slate in my online Slate Mosaic course, available via Mosaic Arts Online The course has 10% off until 25th May with