Requirement
I want to turn my image into line drawing, and then color it with new palette, how can I do this?

Step 1, uplode your image, and type the prompt below in the dialogue
Convert to a line drawing

Step 2, Download the image generated, and uplode the image first, then the palette image, type the prompt below in the dialogue

color the character in Figure 1 using the color palette accurately
Result

Cheers.