>>49903839
You don't need a set of faceplates/heads with different emotions, you just need to be creative with positioning, props, and posing. How you compose the picture will communicate different emotions even if it's the same set face. Which mostly takes practice to figure out

If you want to do lewd stuff, then you might as well go for a proper 1/3 or 1/4 doll body that can be posed properly. Also, there's a lot more options for them in terms of underwear and clothing sets. Pic related is from Haku1923, one of the more infamous doll photographers that work with 1/4 dolls. There's plenty of others to look up too, spend some time browsing the Japanese twitter space to get a sense of what people do