Generated Images are not like the input one

[waquey]

Dear great authors,

Currently I've tried to use canny info as the input of ControlNet. My used case is a child portrait. As the code described, the input will generate edge info and combined with prompts to de-noise sequentially. Finally, it can generate a child based on the scribble and edge info. However, the generated child does not look like the input child Is it possible the results can be more similar to the input image? That is, preserve the identity characters? Thanks

PS: I've tried to alter guidance-scale/strength already