Ask lots of questions. Read books about inventing and products that might be similar to your idea. Talk to local experts. He talked to fire chiefs in his community and managers of stores that sell woodburning stoves. Try and discover if there is an even easier and better way to solve your problem.
All inventors make drawings of their inventions to show how they work.
Kristen Harfmann, East Aurora, New York Draw some quick sketches of your ideas on scratch paper. Practice until the drawing looks the way you want it to appear on your entry form. Pick what you think will look and work the best. Draw all the parts of your invention and label them clearly, neatly and correctly so that others will be able to understand how your invention works and looks. You are ready to make a model of your invention idea.