Pair of Boxer Shorts From Old Shirt - DIY

shirt size 42 (Indian size)
boxer for kids
Actual body measurements:
waist. : 65 cms, bum : 75 cms, 1 leg (thigh) circumference 50 cms, belly button thru legs to rear 56 cms

shirt size 42. lay shirt buttoned up on a table

in the photo + marks not connected (refer white lines)are actual body measurements divided by 4 (waist & bum measurements) except leg which is half of leg circumference. add 5 cms to waist, 3 cms each to bum & leg measurements. connect mark as shown.

before placing this cut fabric on the other half remove the pocket carefully. we will be stitching the pocket on this half side in a slightly different location.

place the cut first half on the 2nd , mark & cut neatly.

now get the sewing machine ready

stitch the pocket first, then reverse & assemble the shorts slowly

measure, cut necessary elastic ( I used 7 cms short of actual waist circumference.
stitch the elastic together to form a loop. divide into four equal parts & mark. place & do a temporary stitch on the four marks to the fabric waist. then fold & stitch the waist for a finished boxer shorts.

thanks for watching. I am not a professional tailor but do some crafts. sorry if I am not that clear in instructions.
variations to this can be replace elastic with tie strands. adding opening in front for boys.