Do you recognize the fabric? It is from the Paisley Bird Knot dress at the shop :)
Step 1: Gather supplies and choose your fabric. Cut a square slightly larger than your mat.
Step 2: Use a diapering ink pen or chalk to mark the corners of you photo opening in the mat.
Step 3: Using a straight edge, mark a diagonal line from one corner to the opposite. Repeat with other side. Your will end up with a large X over your photo space.
Step 5: Lay your fabric upside down and lay your photo mat upside down on top making sure to match the photo space corners with your the end point of your cuts.
Step 6: Starting with the inside photo space (please ignore the fact that I have already done the outside here... I promise it will be easier if you start on the outside), Pull the fabric back around the mat. You may have to cut some of the fabric away so it does not hang off the edge. Then tape it in place.
Step 7: This is important! Go to the OPPOSITE side of the opening and repeat the process. Doing the opposite side next will ensure that you are getting everything even.
Step 8: Do the same thing to the final two pieces. And then move on to the outside. Remember, start with one side and then do the OPPOSITE side to keep things even.
Step 9: Pull the corner of the fabric straight up. Then pull it straight back and tape it in place. You are not really going to see the corner of the mat in the frame, so the point here is to make sure that your fabric is pulled taunt to keep it from creasing.
Step 10: Put it in your frame with the photo and enjoy!