Here’s an image I saw recently that might help you out.

Hi @Sarvesh Gupta, I've looked through all your posts on the pecs and I think you're doing great! I'll try to look for things to improve: - I was about to mention that you placed the humerus insertion to high, but you discovered it yourself :) - In some of your model tracings it feels like you're placing the origin of the abdominal portion a bit to high. - You seemed to correct this after having watched Stan's examples, but watch out for making the muscle to thin. It's pretty thick. Think of each portion as a threedimensional object with it's own origin and insertion. - This is a bit overkill but it's a detail I enjoy using: The fibers of the sternal portion have a twist; the fibers sitting highest at the origin, sit low at the insertion; similar to how the clavicular portion of the pecs insert the lowest on the humerus. I'm not 100% sure this is true, but it seems to be the case when I look at anatomical diagrams. What do you think @Stan Prokopenko @Andrew Joseph Keith @Liandro Hope this helps :) Keep up the good work!

Hi @Andrew Wilson, nice job! I think these are pretty good. The anatomy seems accurate for the most part, and the drawings read as three dimensional even without shading. - I would try to design the shapes more carfully. The lines and shapes wobble a bit and take turns that don't add much to the drawings. I would aim for simplicity. By that I don't mean a lack of detail, but an economical use of lines and curves. In the drawing to the right for example, you have a double curve in the sternal portion near the insertion, when a single s-curve for its entire length would have been enough. When drawing on a tablet it can be hard to control the lines. It might help to use a softer brush, that allows you to gradually build up the strokes. - In the drawing to the right, you might be attaching the pecs a bit to high on the humerus. - I think you did a good job using the muscle fiber lines to show the orientation of the muscle. I would take a closer look at the fibers for the sternal portion to get the anatomy even more accurate. The fibers do a similar thing as the whole pectoralis major: the high ones aim down to the bottom edge, similar to how the clavicular portion starts high and inserts low. - The drawing to the left looks really nice, but I think you might have got the twisting wrong. Hope this helps :) Keep up the good work!

Hi @abrahan13, nice studies! Clean and well presented! I'll try to look for things to help you further: - I would recommend studying the 3 sections more. In the five first tracings you've captured the overall shape of the pecs but they show a lack of understanding of the 3 different portions; clavicular, sternal and abdominal. In most of them, the abdominal portion isn't present in your tracings, when it should be. Look at Stan's examples for inspiration Pec Assignment Examples – Model Tracing In the skelly tracings you include indications of the 3 portions but it would be nice to see you treat them as 3 different forms that interact with eachother. In your 1st skelly tracing for example, you've indicated the 3 sections at their origins, but have them blend together near their insertions. Instead, think each section as its own unit, with its own origin and insertion. -The pecs feel thin. Try to give them a lot more thickness (as if Skelly had 3 steakes on his chest XD) Think of them as threedimensional forms. It helps to do drawings from imagination to see if you understand the muscle or not. I like to do simplified drawings where I experiment with the muscle's function and form. Being able to draw the muscle from imagination helps a lot when drawing it from reference. Hope this helps :) Keep up the good work!

Repetition is the key to success (with drawing, anyway). I usually have to do the assignments more than once too. Sometimes I go ahead and then come back to old assignments because I get too frustrated by being stuck on the same one for a long time. Trying it by yourself; then looking at the video or reference for the answers, following along or tracing, etc, to make a correct version; and then trying it again by yourself to test what you remember is generally a recommended approach to learning how to do imaginative drawing (because you're trying to memorize things). Same goes for drawing chickens, motorcycles, or vases too.

Hi @Romain Decotte, these look really good! Great job! The pecs feel threedimensional and fleshy and they seem to attach correctly. - In #2 I think the clavicular portion of the left arm, inserts a little low, it's almost halfway down the arm. To make sure that it stays on the upper third of the humerus, you could make it a habit to lightly divide the bone into thirds. - In #3, 7 & 8, I think the sternal portion got too thin near it's origin. It might be helpful to think about the pec as three separate pieces, that overlay eachother. Hope this helps :) Keep up the good work!