>>8982 >>8983 >>8984
So what I think is that you're really focusing in the particular rather than looking at the simple impression, the big light/shadow relationship. You're grabbing on to any "feature" you see and just put it down without thinking much and this is super common. All these small details grab your eye but they're often surface details and without anchoring the information in your image, all things become equal. The highlight on the forehead grabs the same amount of attention as the crease under his right eye but in reality, the highlight is in much higher contrast, so whatever you do in your drawing/painting, you should keep this relationship. You've made everything equal in your image because you're not looking at the relationship of things.
Commonly the most important relationship is between the light and shadow. Yes there are half tones but if we look at the big impression, it's the most striking feature. The light starts at the contour and ends where the shadow begins, it's generally a sharp shape on the contour and depending on the form, hard or soft on the shadow transition.
I made this little thing for you. Super quick sketch of what your approach could be. Just looking at the big light and shadow relationship, just using two colors, very little halftones, trying to hold back as much as possible and keeping the big relationships in check. For example if the general color of the skin is too dark, a sharp line has lower contrast even if the sharpness is exactly the same. If the contrast is too high between light and shadow is too high, a soft line can appear to stand out too much even if it's the same amount of softness. This is why the contrast relationship is very important. you can make both lighter or both darker but make the relationship correct. The same goes for the halftones and details between the shadow and light.
Also, just try and get it accurate. The thing I made was a quickie to show you this
Don't "brute force" it. Take a step back and think about what you're doing. Just grinding away doesn't do much.