Looks good. As long as you know the direction the axis of the ellipse is pointing, then you'll always draw the ellipse perpendicular to that axis

To aid drawing your ellipses, run an imaginary line through the skull from ear to ear. That line will always be perpendicular to your ellipse's long axis. The ellipse's roundness will depend on how much or how little the side of the skull is exposed - a rounder ellipse for more exposure and a squashed ellipse for less exposure.

These are amazing and no critiques from me lol. Great work!

Honestly, i think these are very good. I think they look more natural than the ones you based on reference. Watch out for the center line. I feel that some times you twist it a little and the jaws dislocates slightly. I reviewed your old ones, it happens mostly at the bottom third of the face. Beware, the 3-d model has a curvature to the face but take care to not exaggerate it. But again, very solid work. If you're having trouble drawing from imagination you can approach it in a hybrid manner. Ty drawing half of the head from the model and half from imagination. Or try looking at the model for a few moments, close it and draw what you remember. Also be nice to yourself. it's normal to have troubles when you're attempting something new. If it's of any consolation, if you having difficulties it means you're practicing correctly. So give yourself the credit. You're doing an outstanding job. I know you're taking your time with the Loomis head, but I'm looking forward to what you're gonna do after. Best Regards

Wow these are on the money. I could use these to study from myself! Great work. I like how you also try to draw these from imagination too. Going back and forth with from a model and testing from imagination is the way to go! Great work Andreia!!!

This is amazing ^_^!!

This seems very good drawn to me

These are very good. Most you get very close of the reference. Number 47 and 54 I'm seeing more of the top of the head than what you did. If we're considering only the head I'd say I see more of a bird eye view of the head. When studying the loomis method from reference try to also include the gesture of the neck. A lot of the personality of a portrait is in the neck, So starting noticing this gesture would help you a lot. As you start working from life you may find that some heads will look weird compared to the photo. That's because is because the loomis heads has a few limitations: The "ball" - In reality the cranium is closer to an oval than a ball. And as you observe the head from the side you may think that the original head is more elongated to the back. For now just focus on constructing the head, As you study more the skull and get more experience in putting features you'll learn to compensate that. So don't fret about it. Open mouths - As you open your mouth the bottom third would became bigger but the chin doesn't go down directly. Since the articulation of the jaw is near the ear, the chin would recede as it go down. It would be clear as you study the skull. Number 56 looks weird because of this). Perfect thirds - You will find different models and you'll find a lot that don't exactly fit the perfect thirds. Number 52 has a Huge jaw. He's opening his mouth, but he's not moving his jaw much. The bottom third of his face is bigger than the other ones. Things will start to complicate, but you are working really hard so I feel you're up for the challenge. Try tracing the loomis head over the models and compare the results to your drawings. Observe the shape of the jaw and the overall shape of the face and how it changes from person to person. Keep drawing this heads, try some from imagination, and if you get bored start studying features. I can't commend you enough for all the hard work you're doing and the extra steps you're taking. Keep drawing! Best Regards

Very impressive

Hi Andreia! this is solid! all the heads look similar. The only thing I can see is the line quality, it would help to have an even better read if the inside lines are lighter or thinner, or darken and thicken the outlines. Honestly I'm just nitpicking because it looks so good.

These studies are so good! I love Stan's 3d models for drawing exercises. All look really good to me but the last two..29 and 30 have a minor issue with the centerline. The center lines are off and making the two sides of the head look asymmetrical. Other than that these are wonderful!

Hi Andreia! The only one that looks a bit off is on the second row, the third one in from the left (right in the middle). It's the profile view that's tilted so we can see under the jaw and chin. That one looks a bit off and I think if the far side jaw line shape matched up with the jaw line in the foreground more it would be solid looking like all the others. Really good work on these!