Step by Step_Sewing the Classic Leggings

Step 1: Know your pattern & what you just cut out

Step 2: Put your 2 gusset pieces wrong side to wrong side.  Pin together and use a single needle machine to stitch them together with 1/8" SA.  This will make them easier to sew double layer to the body.  When you wear the leggings for the first time this stitch will probably snap/break - that's ok it's not holding anything together in the final garment.  It's just holding the 2 pieces together to make it easier to sew when we put 3 pieces together (body to gusset 1 to gusset 2).

Step 3: Serge the waistband (WB) side seams together by putting right sides of fabric together back WB to front WB.  Snip at the center so (where the pins are in the below picture) so you can press the seam allowance (SA) left and right which will help reduce the bulk when you join it to the body.

Fold WB wrong sides together, right side out.  Single needle stitch the WB together 1/8" away from the edge again to make it easier to join to body.  Again, when you wear the leggings for the first time this stitch will probably snap/break - that's ok it's not holding anything together in the final garment. 

Step 4: Sew cuffs for hems of legs.  Start by putting right sides together a serge the two sides that don't have any notches together.  Snip at the center so (where the pins are in the below picture) so you can press the seam allowance (SA) left and right which will help reduce the bulk when you join it to the body.

Fold cuffs wrong sides together, right side out.  Single needle stitch each cuff 1/8" away from the edge again to make it easier to join to body.  Again, when you wear the leggings for the first time this stitch will probably snap/break - that's ok it's not holding anything together in the final garment. 

Step 5: Put your body pieces right sides together and serge the front rise and back rise

Step 6: Serge the gusset to the pant front.  Match the center notch of gusset to the front rise, then match the points to the notches on the inseam.

Pin the gusset to the back same way you did on the front, and serge the entire pant together on the inseam.  So start serging at the hem (ankle) on one side, up the inseam until you are serging gusset to back inseam all around to end at the other hem (ankle).

Step 7: Serge the WB to the body.  If you are putting in labels, now's the time to think and execute placement.  The double notches on the WB should match to the center back rise, because the WB is wider at CB than it is at CF.

Step 8: Serge the cuffs to the legs at hem

Done!  Give it a good pressing and try them on

Or put a price tag on them and post them for sale