Thoughts on composition ...

Composition is the single most important  thing in Art..Before anything else ....before even values...before colors ...There is an idea , design, hence composition...
We all started with the simplest thing: still life ..I found an interesting analysis by Will kemp.
Keep in mind, he is talking about just one approach, classical , or "worm eye view" and somehow forgot to mention other style of composition like "bird eye view with a very modern, contemporary, close-up idea. Anyway, you can see it for yourself. It's still a great, very informative article..

Are You Making Any of These 7 Compositional Mistakes with Your Still life Paintings?

http://willkempartschool.com/7-simple-compositional-tweaks-that-make-your-still-life-painting-100-more-professional/