A Lovely Day

I want to tell you about the beauty around us.

Or, I want to say something about the beauty around us.  Remember that tell needs a listener: tell who?

Now I'm thinking about the magical sun and cold wind, the sunny flowers and green trees, the birds and other animals. Our world is magnificent! Do you are agree?

Always use to be (am, is, are) when you use present continuous: "I thinking" is impossible. Also, agree is a verb, so we use to do when we ask questions. Do you agree?