Mark the front darts of the doll pant sloper by folding the excess material at the waist so it makes a triangular dart that points down the center front of the doll's leg. Use a pencil or pen to mark both sides of the fold so that you will be able to see the complete v shape when you unfold the front pant sloper pattern.
Remove the pattern sloper carefully from the doll and trim the inner leg seam line. Unfold the dart, and mark the sides of the triangle for the waist dart. Cut the waist dart open. Check the fit of the completed sloper piece against the doll and compare it to any commercial pants you have for this doll. The sloper pattern should fit the doll exactly with no extra fabric, except along the front of the leg, where the fabric falls for the front of the pants.
