The Farmer

You are a farmer and you own a field of flowers. Your mission is to grow flowers, the flowers requires specific amount of water, if you give them too much water, they will dry, if you forget to give them water they will dry too.
When a flower is at its full bloom, you may pick it using the scissors and receive 10 points, if you're late and the flower begins to dry, you will only get 3 points.
Keep watching the water level, and fill it up again from the tap.