Your questions demonstrate that you don't understand how magic works in witchcraft. When you cast a circle, you can't see it. It's a visualization, i.e in your mind's eye. Sometimes you can feel that the atmosphere is different within the circle. And you don't know yet if the spells you have already cast have worked or not.
The point of waiting until you are older is that you will know these things. You will realize that true witchcraft is not about casting wizzy-wizz spells. It's about creating the future that you want. And that tends to unfold slowly. However, fast 'intention' spells work really well for things like parking spaces and smooth journeys.
For weather spells, you can practice 'cloudbusting'.