Step 3: More chalk marking...

From WormWiki

by Amy Youngs

Those last 2 marks you made at 12.5" and 24.5" over are the bottom part of the bag. These marks should also be marked at 1.5" up, going towards the folded edge. Then make diagonal chalk mark lines to connect the top marking to the bottom marking as seen in the picture. I used the tape measure as a straight edge in the picture here.

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