I've noticed a lot of models uploaded are not made to print, they were made for computer viewing and a lot of the areas are a single plan in areas like the hair and clothing. This causes them not to hold up well when printing as they have no thickness. Also some are blocky as the computer viewers smooth the edges away when displaying the models. So I will be editing them from various sources so I can print and will share so you can as well.
I make no claim to making these models and only thickened the needed areas to make them more printer friendly. All were uploaded from free sources, if they are from a pay only creator I am unaware and sharing is unintentional as again I'm getting these from free sources for non commercial use.