There will be a pattern in the kit to use to cut your fabric. I recommend cutting it a little larger.
Next you put the fabric on top of the cup piece.
Next place the button face part and push down with the tool provided. This step may take some practice to get an equal amount of fabric around the edge.
Use your finger to press down excess fabric.
Add button backing and press into place with tool
And you’re done ready to use your cute new button.