How do you get to understand it like that? also like how do you draw the eye without lines... I use lines as a guideline and try shade the eye in and the lines out
Just do a lot of studies. The video from Stan Prokopenko i posted show you the planes you need to be looking for when drawing an eye from observation.
I am drawing digitally, so i usually don't need to worry about shading my underlying sketch of the eye out. I can just hide the line work.
I think i wasn't clear enough when i said that you are drawing outlines. I meant that the the underlying structure is in need of improvement judging from the lines that are still visible.
If you take a look at the second video from Stan Prokopenko concerning eyes you'll see that he manages to create the illusion of depth just with his linework. If you achieve this you can start shading and will most likely be rewarded with a good looking drawing. http://www.youtube.com/watch?v=TtrqS...4UT-yUo7pC13GQ
It helps to think of the eye and skin as a living whole — with contours, and depth, and light where shades are not, instead of a flat chosen subject to be drawn and shaded. ^^
Because I don't get some parts of your shading — where is the light coming from? Your shadows are missing. You've got the skin tone, but there's no proper depth. It's, as Tiggeraz said, inconsistent. The shaded part to the top right of the eye drags out a little too much while the lighter parts on the side of the nose ridge doesn't coalesce with the rest of the shadows.
Imagine when the eye fully opens, or closes, what are the shapes going to be? Build the shades and lines around it for a more natural look.
Also, for studies, if you're going to do them, try to draw what you look at, not what you think you see.
"In yourself right now is all the place you've got."
"There's no failure except in no longer trying."
"Practice not just till you get it right, but till you never get it wrong."
"Seven times down, eight times up."
Something is missing, you feel, and wow! i can relate to that agony, except i usually feel that something is messed up or wrong and use curse words.
make a photocopy of your drawing, and put a real dark, eye shaped darkness, slightly angled, that starts above the tear duct, follows the contour of the inner upper eyelid then arcs upward and drops back down to where you began the shadow just above the tear duct.
that is consistently the darkest part of the the whole eye, if you think of eye as everything below the eyebrow and above the cheekbone, and between the nose and the edge of the temple, no matter from where the light is hitting the eye.
i say, "make a photocopy" because i often do that to wrestle with elusive problems, and i can compare different approaches, see the evolution of my struggle.
also, one of the best tools i've found in my drawing quest off and on over the last 25 years are the books by Robert Beverly Hale. in his book anatomy lessons from the great masters on page 210 he analyses Albrecht Durer's charcoal portrait of the artist's mother, specifically her eye.
Hale's books are the best tools i've ever found. here's a link http://www.amazon.com/s/ref=nb_sb_ss...ripbooks%2C760
libraries often have his books.