Now that you have the TWO drawings done with the sharpie, number the pieces on both of the copies of the drawing. Make sure you number them the same on both copies. Then cut one of the copies apart cutting off all of the sharpie marks. You will need to do this because the width of the sharpie mark is the same width of two pieces of copper tape butted together.
Then trace the pieces that you have cut onto the glass. Keep in mind that the glass may have a pattern and that the pattern may affect to outcome of the final project. As you draw the pieces on the glass, number them so you will know where they go on the second copy of the drawing.