Oh, haha. Well, it's all good now. I tried it out, but I couldn't quite figure out exactly what I needed to do. I see that the water drop will make the apple large. That's the most progress I've made.
There is not much else to it honestly. You can grow a tree if you place the apple on the little patch. We wanted to get more little branching interactions but might come back to it at another time. Thanks for playing!!