Can u do it step by step pls

I am using mobile phone and I didn't use pen to draw.

Ob mobile or

Firstly, I Max the paint... Then, tap on the screen and I erase it to make it exactly like a square... I don't think you understood this mean, you should rub the tiny box around the square. Then, it will be a perfect square.

How did u make that mini cube thingy◖⚆ᴥ⚆◗