firstly i got an old pair of jeans and i sliced of 2 patches about the same size. i choose mine to be where the back pockets where! the bum bit!
the next photo shows that i stitched up 3 sides together to make the bag sides and then i stitched both bits of the top but not together otherwise there would be no hole!

i used pink and blue stitching as its my daughters fave colours. use bright stitching to make it look super cool!

i then cut the waist band area of my jeans sewed this and used it as my bag handle!

by the way im the worlds worst at sewing so if i can do it so can anyone else!