Female facial anatomy study

Hey there! This is one of many anatomy studies i did in the last couple of weeks. My goal here is to simply reach a certain level of believeable facial anatomy. Sometimes it was a bit tiring because I saw little to no progress but going on I didn't feel all that discouraged. I knew that i had to get better reference and so I started scannig people from my university. This helped me quite alot with getting down to the nitty gritty stuff of a human head. I can higly advice getting some scans. Thanks for checking out. If you have any constructive critism please hit me up! I want level up in the long run and every bit of help is welcome! :)