My belief is always that you always have to keep practicing even if you don’t have a mind-blowing concept in mind (yet). If you paint, keep on painting. If you sculpt, keep on sculpting (et cetera). Don’t wait for lightning to strike.
The four you see above and below were born form a simple idea to force myself to keep busy (and to keep improving). The concept that binds them together (however subtle or obvious), is woven into each painting. Try to spot ‘m.
I’ll give one hint; the fourth has it twice.