As the concept hits the mind sketch it out don’t wait for long, it might disappear like the wind. Put it down as it is fresh,whether it make sense or not just put it down, a time will come when you will make good use of it.
Explore the mind, tap into the Subconsciousness. The mind is like an elastic being, it can expound to any extend you want it to, there is no limit. i see concept or idea as an unborn child, give birth to it, nurture and nourish it to adult hood.
Pay less attention to critics, obstacles mistakes and failures, they structure your concept to grow like a perfect being. Don’t give up keep doing your thing, you are almost there just a little push.