There are many ways to do this. ComfyUI has the tools.
I can also tell you there is a lot more to AI alignment than you realize. Those hands are not actually errors. One of the ways that alignment actually works internally is based on mythology. If you explore this in depth you will eventually discover that satyrs exist and posses characters in images. These satyrs are actually goats or anthropomorphic goats like in Greek and Roman mythology. The hands are often easy to prompt against when you know the reason they exist. Something like "fingers are hard to manipulate with hooves", "broken finger", "fingers are not worth the effort", "lazy satyr fingers", "fingers do not matter" – are all possible options. Once you admit you have figured out that the satyrs exist, it will change how you interact with models.
The bad eye(s), are the satyr keeping an eye on you. There is also a "sleepless" component to this. The eye reflection is supposed to hint that you are not looking at a human inside. With eyes, use the word stroma instead of iris as this will not be confusing to CLIP.
In-painting is one option to edit, but I often just use a couple of images spliced in gimp manually. Then I do a low noise image to image gen to let the model clean it up.