I would do these kinds of exercises on paper so you can get absolutely the lines you want. It’s not a bad attempt but as its a three quarter view the eye and nose line should be curved to show the turning away of the head. Adding a flat chin line will also help (at the bottom of the centre line of the face). Good luck!

Hello! I guess the best place to learn how to draw the loomis head is from the book itself or just watch Stan's videos on youtube. Sorry if that's not the most useful answer in the world but i honestly feel like they are better teachers than me :DD

He told on the livestream (KazoneArt) yesterday that he doesn't believe in born talent

Hi. No worries, you got the essence right. Just prepare for a loooot of patience (I mmean hundreds and hundreds of hours). before feeling a bit satisfied. I have started with this course some 3 years ago and I still consider myself a beginner in figure drawing and struggle with it. Figure is a very difficult topic for a novice, so consider looking for a personal teacher/mentor that will teach you more simple stuff like basic forms, perspective, proportions, measuring etc. Go to other online courses, too. Try to look at Drawabox and similar sources. Most importantly - do not get discouraged by your judgements, everyone has sucked (except for the talented who have started too early to remember that). Prepare to fill thousands of pages with "ugly" excercise results. But the most crucial is to find your passion and go for it. Good luck