Pablo, like it, so, as an artist painter, let me opinion of Professor, we can come in handy.
Painting - is a "pseudo 3D."
Ie on a flat canvas to the illusion of three-dimensionality.
For this, any plane blizhelezhaschaya must seem any closer daleelezhaschey plane (this sobsna, the main subject of the theory of heat and cold painting).
look closely at the picture with carrots.
Do you see that the cloth over the top right of the carrot (especially over its thin end) is obviously closer to the viewer (artists say "get out"), than the carrot?
The same effect is very noticeable in the picture with the unit in the right corner of the picture, on the border of watermelon and tablecloths.
Mess with the planes is in every picture, but can not as obvious.
Fork says that you draw while also do not know how ("draw" in the professional sense - to build a drawing object in real term).
Basically this all especially nobody sees.
Here on the site you also Professor remarks did not.
But the people who see it "on time" is, believe me.
So two options, (like all
>) - to begin to learn and permanently lose the ease and confidence, or to fool the naive viewers.
For the latter, you have enough natural artistic abilities.
Sorry for some excessive candor, though - like.