Составьте 3 предложения с first и 3 предложения с at first. зарание огромное )

First I'll talk to you and then I'll decide what to do.
First do your hometask, then go for a walk.
First think, then say a word

At first I decided he was pulling my leg, but then I saw he meant it.
At first I didn't like him but now I do.
At first she didn’t like him, but then she fell in love with him.