It's simple ... Download Meitu Xiu Xiu, then create a new blank canvas, right-click the picture, and insert the brush material below.

(← I found it casually)

Arrange according to the size and position you like, find the text, click enter text, enter the text you want to write, and then typeset at will. After finishing, right-click to merge all, then click Basic-Reverse Color, right-click to insert the picture, right-click to superimpose the positive film after setting the position, and you can do it ~

(orz made by a fool)

This is the way to use mito. If you don't understand anything, please ask me again. ...