Light and compact! The smartphone stand which is convenient for carrying around! Free angle!

I made a light and compact smartphone stand that is convenient to carry around.
The angle is also free! It can be folded, so you can put it in the gap of your bag.
It's very easy to make, just cut and paste.
I would appreciate it if you could refer to it.
～Materials～
Firm cardboard
15.5cm×7cm 1 piece 7cm×8cm 2 pieces 3cm×7cm 1 piece
cloth
23cm×17cm 1 piece 20cm×17cm 1 piece 3cm×3cm 1 piece
Magic tape 12cm
Double-sided tape
#Mobile phone