I had that feeling with one doll before. I felt bad though because I thought I love the sculpt. I actually love how the girl made the character, look and how he was styled. I ended up selling that same head sculpt that i bought. You have to identify if you really love the sculpt or the character. That way you will be able to decide if it's worth to invest in making a similar styled doll. You may have already been told, but copying is frowned upon in this community. But it's your doll, your happiness, so if it will make you happy to go and do something "similar" to that doll you fell in love with, go ahead. Nobody has the right to tell you otherwise, but yourself. Don't care about the hate? Go for it!