Hey... it’s super simple. I’ll teach you how to buckle it yourself, so it will be convenient for you next time.
Toolbar, Selection, Color Range, select white, then invert the selection and then CTRL J!
Then delete the layer below, then crop the canvas directly, and then adjust it to 1000px *1000px! Then save it in PNG format!
It is better to teach a man to fish than to teach him to fish...