Step 2: CUTTING OUT THE SHAPE OF THE PURSE:
Using a ruler, measure up the sides of the bottle. Place a small dot at your desired height. Do this for both sides and then draw a straight line across the front. Now add one half inch to each side of that line. Stated another way, you are going to be cutting one half inch into the back side of the bottle. Refer to the picture for the visual.
BEING CAREFUL, start cutting along the line you have drawn. Don't try to cut through on your first time. Make a score mark and then slowly cut through.
When you have the front cut, then you will want to cut directly up the sides. Most bottles will have a joint mark on the sides for you to follow. You will still have the half inch slit into the back, but for right now just cut up the sides of the bottle.