Draw Schematic for my product

The product which I yearn to build is a product the size of a small USB. The function is for a micro LED to blink every 20 minutes for 20 seconds. I need an individual who is able to develop a schematic and the materials required to fit the product in the size of a small USB drive. the schematic you draw must be able to prototype into a very small space (size of USB). I can discuss details after the bid is placed. Thank you and I hope to have a mutually beneficial agreement with the chosen Freelancer.