How to Shorten Straps on a Tank Top by Hand

Put on the top.

Hold and stretch the strap to the desired length.

Secure the desired length of the strap with a safety pin.

Use a fabric pencil to mark both sides of the strap right above the safety pin.

Remove the safety pin.

Use the ruler to measure the length between the two marks.

Place the top down so the back is facing up.

Place one end of the ruler where the strap meets the back of the shirt.

Use the fabric pencil to mark the strap, using the measurement from the previous step.

Draw a line with the fabric pencil on the seam below the strap on either side of the strap.

Use the seam ripper to rip the seams from the back of the strap where it meets the back of the shirt.

Turn the top inside out.

Match the strap with the lines from Steps 4 and 5.

Pin the strap so it stays in place.

Use a needle and a thread that has a similar color to the fabric to sew the strap to the seam of the top.

Pierce the needle through the fabric of the top and then pull the needle through the strap.

Continue the same process downwards until reaching the end of the seam of the top.

Tie a knot after pulling the string.

Cut the excess thread.

Repeat the step for the opposite side of the strap and the upper side of the strap.

Put the top back on.

Make sure the top fits properly. If not, repeat the guide from Step 1.

Use fabric scissors to cut the excess fabric.

Repeat all the steps for the other strap.