Sew the shoulder strap to each side of the bag (sew it on the inside of the bag so that the side seams on the bag are in the middle of the width of the shoulder strap and so that approx. 2-3 cm of the strap is inside the bag on each side).

Please remove spaces between words.
Sewtheshoulderstraptoeachsideofthebag(sewitontheinsideofthebagsothatthesideseamsonthebagareinthemiddleofthewidthoftheshoulderstrapandsothatapprox.2-3cmofthestrapisinsidethebagoneachside).