1. First, open "File" in the menu bar and find the picture you want to add font to. The special problem here is that you have to copy this picture, and then add a font to the copied picture by opening Image in the menu bar, finding the Copy command, and then pressing OK.

2. Secondly, right-click "T" in the lower left toolbar to open a small dialog box with two options, namely "horizontal text tool" and "vertical text tool". After selecting the font arrangement direction, a line of things will appear under the menu bar at this time, and you can select items such as font and type.

3. Third, put the mouse on the picture to be filled with fonts. At this time, the arrow becomes the shape of a small box. Find the position where you want to add words, and use the mouse to drop down a box of similar size.

4. Fourth, choose the color required by the font. Open "Window" in the menu bar and select "Swatches", and the right side of the screen will appear. You can click on one of the colors with the mouse, such as green, and the color you need will appear here on the left.

5. I can finally start writing.