Hi, I'm not an expert or anything but I might be able to help at least a little? If was doing the project here are some questions I'd ask myself:
1) Who are the influential royals and nobles of the era and how did they influence the beauty standards of the time period?
2) In the middle ages England was often invaded or taken over by others such as the Romans and Normans, so did this lead to beauty being influenced by Roman or Norman culture?
3) How might beauty and make up differ between different religions, ethnic groups and social classes?
4) Did make up have any special meaning in the era? For example, in certain periods of history natural, subtle makeup was popular because wearing bold, heavy make up was considered something only prostitutes and "loose women" wore. In other cultures and time periods makeup may have been used purely for ceremonial/cultural purposes, rather than to look attractive. etc etc
Idk if that was any help but I hope it wasn't totally useless 😅