Like your purse. Very creative. The fact that you re-used material is great.
A tip on your purse straps. You mentioned they are pulling away already and are in for a repair job.
Cut 4 pieces of cotton fabric. In this case I would use black cotton fabric.
Interface these 4 pieces of cotton fabric.
Take 2 pieces of interfaced cotton fabric and sandwich & sew your velvet strap end into it.
Repeat on the other end of your purse strap.
Place these reinforced pieces into your purse top so you stitch through these reinforced ends vs stitching through just the velvet.
You have just reinforced your velvet strap to help deal with stress, and prevent that pull-away fraying. Your strap has a better chance of lasting longer.
hmmm...hope I made sense.
Let me know if you need clarification.
You know how you write something and you know exactly what you mean but the rest of the world is left wondering?
I have a feeling this may be one of those moments.