The artist's ability to pre-think the art is where the mastery comes in. What elements to use, placement, and overall the ability to take the decision making out of the art making.
when i googled the art of Sol Lewitt I see that he is really into cubes. He has some interesting color elements as lines and of a star, but I wonder how random the process of making those was.
I like this one:
because it's really simply and just kind of about structure and how parts can be missing but still work. with conceptual art I'm often left feeling that I could do the same thing if I got the materials and worked for a few weeks straight. The thing is that I'm not compelled to do it because it seems unchallenging and not that fun to make.
I looked up other conceptual artists and found this:
it has elements I'm familiar with and puts them into a form that is non existent.
Michael Ree's stuff is kinda creepy, but I love the mash-up of human and alien type pieces.