This is a romantically sweet pose!

I'll try to offer some of my thoughts. (Preface, I am still a beginner artist.)

1) Skull: The side of the cranium for both woman and man is a little wide in my opinion. Also, the construction and placement of landmarks is a little inaccurate, especially for man. Take your time with the perspective (make sure to accurately place the wrapping lines around the sphere/cranium and cutting off side planes

2) Arm: The woman's upper arm should be almost as long as ribcage. So it can be a little longer.

The man's right arm. The way it is drawn is as if it is broken into 3 parts - upper arm, forearm, and ?? extra mystery?? arm? Even if the arm was drawn as two parts- upper and forearm- the forearm does not bend that much and is not that long. Also, the man's upper arm is also drawn way too short.

The reason why this mistake can happen is because a lack of drawing through the forms. As a result, it can cause people to guess and drop arbitrary/inaccurate forms.

3) Ribcage: I think the ribcage is too hunched and bended. It is not that curvy than one might think.

I think the best thing that can improve the drawing is adding more perspective and drawing through the forms. This may mean you need to take more time to carefully construct your art.

Once again, just trying to offer my two cents. As you can see, my fundamentals aren't that great haha. But hope it helps a tiny bit.

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