Hey there! Well, I'd definitely recommend focusing on improving the structure and proportions of the head. For example, the structure of the head on the right isn't quite working because you're not following the underlying form of the head or its perspective. As a result, the nose feels off, the eyes appear misaligned and follow a different perspective, and the character is missing eyebrows. As for the head on the left, the proportions feel a bit off. The nose is too small, while the ear is too large. As a general guideline, the ears and the nose should align proportionally. I'm not the biggest fan of using the Loomis head when drawing portraits myself, but learning how to construct it from different angles will give you a very solid foundation for portrait drawing. So I'd definitely recommend practicing the Loomis head from a variety of viewpoints. :) Keep in mind that you can divide the head into three equal sections: from the forehead (hairline) to the eyebrows, from the eyebrows to the nose, and from the nose to the chin. The eyes generally sit within the middle third (between the eyebrows and the nose), while the mouth is positioned within the lower third (between the nose and the chin). These are the standard proportions used as a starting point. Of course, they can vary depending on the individual, which is why I'd also recommend drawing portraits of many different people while focusing on their underlying structure rather than the smaller details. You'll notice that by keeping these principles in mind, I was able to adjust the proportions of the first head and correct both the angle and proportions of the second one. There are plenty of great videos on YouTube, but if you ever have the opportunity, I'd definitely recommend joining ArtWod and taking their Portrait Roadmap. :) Hope this helps! | Artwod Feedback