Put on the pants with the shoes you will wear
Fold the hem to the desired length
Pin the fold in place
Remove the pants and turn them inside out
Measure and mark the new hemline evenly on both legs
Cut off excess fabric if needed, leaving enough allowance for a hem
Fold the raw edge up to the marked line
Fold again to create a clean hem
Press the fold flat with an iron
Thread a needle with matching thread and knot the end
Use a blind stitch or slip stitch to sew the hem by hand
Keep stitches small and even
Sew around the entire leg hem
Tie off the thread securely
Repeat on the other leg
Press the finished hems again