Ways to make your tummy flatter in pants or jeans
If you have pants with a zipper in the front, you can sew some firm fabric across the front to firm up your tummy. Join the fabric on both front panels at the side seams, facing or band and onto the side of the zip flap.
The fabric should be a little lower than the zipper, but the final length will be determined by your body shape. We all have different lengths from our waist to the crotch. Try this on an old pair of pants first until you get the desired effect (which is a flat tummy) then make a pattern of your tummy tuck pieces for all your other pants.
Happy sewing
Judith aka genie