I am an art student studying Chinese painting. For your signature, I spent a piece of professional sketch paper (50 cents each) and signed it with a carbon pen. I signed it and returned it to you. Take a photo with a camera, connect it to a computer, control and process it with Photoshop software, then crop it on the computer, and upload it to you after all your hard work. It's been a hard work for me, sister, give me these 5 points.