Scrap fabric and denim remake bag! How to make a crossbody bag!

A convenient and easy-to-use jeans remake bag with 3 pockets that can also fit a plastic bottle!
A convenient bag that makes effective use of scrap fabric and jeans.
I would appreciate it if you could use it as a reference.
~Materials~
jeans
Bag body part 22cm x 58cm
Scrap fabric　3.5cm width appropriate amount (lid part 22cm x 28cm)
Inner fabric bag body part 22cm x 58cm
Lid part 22cm x 28cm
Strap attachment opening 5cm x 16cm
Two metal fittings
1 magnetic button
#pochette
#Sacoche
#Shoulder bag