JP - Just want to learn to draw.

[John]

but I feel very artificial did not feel the form in space totally, but thanks to Kim Jun gi (again ^^) he showed me that the answer It was in front of me.

It might be a good idea to know what 'feeling the form' actually means. Or simply, what constitutes 'form' to be precise.

I'm glad KJG worked it out for you.

Just in case you need something more to fall back on, form is essentially organized shapes to represent an object in reality. In this case, an object on a 2D medium that's rendered in realism.

Shapes can be broken down into 5 things. Line placement, line quality, values, colors and edges.

In my opinion, if one is not 'feeling the form', that can mean your shapes are out of order. You can deduce the problem from those five things that constitute a shape.

That being said, happy to hear you're close to a breakthrough and good luck with the progress.