The layered image visualizer has a stricter requirement than the attributes tool - namely, that the image needs to be a layered image. So, specifically, you need a declaration like layeredimage eileen standing: and then you could type in eileen standing to the visualizer to adjust it. It is not sufficient to have image eileen standing = "..." or similar. If you aren't sure what layered images are, you can read more about them in the docs: https://www.renpy.org/doc/html/layeredimage.html#layered-images
If you're still having trouble, feel free to post your layered image declaration and the results of typing in that name to the tool and I'll see what I can do to help!