|Reflections on two types of glass - transparent and opaque|
When looking for shapes in reflective surfaces, plan on painting around the lights in an opaque object and paint the shadowy shapes on the clear one. Squinting your eyes helps the lights pop and they are easier to see. I drew with a small water soluble pen first, added watercolor to the to the cake within the dome. The shapes and reflections were painted after that.
Choosing appealing subject matter is easy if you open up your eyes to your everyday life. Sometimes the most common of subjects make the most emotionally powerful work...we are connected to those things.
So...consider this your assignment...go get some yummy desserts and paint them...and then test them!