3-dimensional image or commonly abbreviated as 3D is an image or painting that seems to have 3 dimensions, namely length, height, and width. In general, if we draw on paper, the result is called 2-dimensional painting because it only has the size of length and width.
But through this 3-dimensional work of art, one can create a different perspective that can fool the eye, thus making the image appear tangible or real. To make it needed special expertise, because it can't just scribble on paper, but everything must be taken into account to make it look more real. But if you want to try to make this 3D pencil art, then you have to be a little more diligent in practicing so you can produce beautiful and attractive works.