Make sure your pattern is cut out.
Take your felt and layer it on your material, glue the edges over.
Repeat this with all your pieces.
Take your wire and glue it onto one of the circles. Cover it with another circle. (This will be the bottom of your hat.)
Fold your hat round to make a cylinder shape for your hat. Hot glue it together and hold it down with clips.
Glue your top and bottom onto your hat.