Welcome to the site.
From the looks of the pics you have the basics covered, a brush, moisturizer and shampoo. Your hair texture looks straight. It may be necessary for you to grow your hair out to a longer length because you need a slight curl in order to form waves.
Waves are a process not a singular event. The biggest tip that I can give you is to patient and consistent with brushing and moisturizing. You may also want to contact another community member that has a similar texture. That way you can get that members experience versus the opinion of another waver with a different texture hair. What works for one person may not work for another person. Be flexible and good luck.