>>5861294>What's a bargue plate?One page (image) of this book. I remember when I started, I could have spend 2h on one eye, trying to get it perfect.
>How will this improve my measuring?>How do I measure this?Eyeball: your eyes are very fine tool, they are much more precise that a pencil, but you haven't trained them yet, and a pencil feels easier to you, but that's mostly an illusion.
Spending a few hours simply to observe and reproduce will help you train your eyes, and you ability to use a pencil. You can proceed as such: say you're working on one eye, use tracing paper and trace this eye from your screen to the tracing paper. Then, take one distance, say the width, from the tracing paper and fix it on your drawing paper. Keep that distance. Now try to copy what's on the tracing paper as best as you can. When you think you're done, overlap the tracing paper with the drawing paper, and see where you fall short. Ideally, this should be 100% accurate.
Keep in mind that high accuracy is a training method, not a way to create art. When creating art, you need a looser approach, but that'll come later: first learn to observe and reproduce.
As for using a pencil, I'm pretty sure Proko (YouTube) has a video on the topic; it's a recurring theme in nearly all drawing course out there.
>Also how do I stop piercing the paper with my pencilDeep breath and relax yourself for a few minutes, pay attention to relaxing your arm muscles and wrist. Then take the pencil try to hold it firmly, but with a light touch: the pencil should caress the paper. Try to pay attention to the influence of the sharpening.