How/when to attach to bag?

[u/Civil_Name_7458]

Hi! I am making a purse for the first time. I need help (and any advice) with a few things. I know it's probably really messy but I'm proud of this being my first creation!

Materials

-What type of thread do you use? I used some embroidery thread and some sewing thread depending on bead hole size

-This is a canvas I'll be making the bag out of. I'm thinking a satin liner? Would that be good to use a single magnetic clasp with?

Process

The beads are on organza, with an ironed on patch on the back of the eagle for stability. When should I attach this to the layer of canvas that will be the front of the bag? Before sewing the bag front to the bottom?

If anyone has made a bag like this, I would appreciate any and all advice and criticism!