Support for modeling a pursue of Wallet 3D!

Hello everyone.

Hello everyone, I am making a 3D wallet and this is the first time I have done it, as I am a beginner in Blender.

I send the reference images from the original wallet and the images of the project that I am doing from the 3D portfolio.

My question is :

How do I make the shape part of the wallet purse? Which way can we say it is considered easy? What steps should I go through to make a portfolio form similar to the reference photos?

I am trying to do this part, but I am having difficulties, and the part I did as you can see was not very well, although I tried to do the best I could.

Ps .: I would love if you could send me the print screens to better follow the steps to make the shape of the wallet, please.
So, I would be very grateful for your help.

Best regards

José Moreira