Ask yourself what it is you are looking at. Is what you see really what you first thought it was? Ask yourself is it real? Ask yourself why you are looking. Ask yourself why the artist has presented you with what you think you see. Ask what it means. Then you can comment with something more than a single word of compliment.
Nothing in these works is what it appears to be. All these works, the abstract and the figurative, require you the viewer to complete them with your interpretation. Your imagination is the final process in their completion