First pick out a fabric that you want to use, then choose another fabric that matches. Next you have to decide if you want to make a letter or a symbol of some sort. Then you will need Heat N Bond, its an iron on adhesive. I think you can buy any "brand" but that is the one I found and was reasonably priced. Iron on the adhesive and leave the paper backing on .
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Then I took the fabric and put it face down on the cutting mat. I taped the edges of the fabric to make sure it didn't wrinkle up.
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Set your cricut to the selection you want it to cut. If you do not have a cricut I think you can free hand cut whatever you desire.