Dibujar mi firma en una aplicacion android y guardarla en un firestorage

I am looking for someone to create an Android application that will allow me to draw my signature and save it to a firestorage. I have a clear idea of what I want my signature to look like and I would like it to be saved in PNG format. Additionally, I would like the application to integrate with other apps. The ideal freelancer for this project would have experience in developing Android applications and be familiar with firestorage integration.