I do like playing with images, as you can see! (literally and metaphorically). By playing with them I learn new techniques, skills, and expand my ideas. Just getting the reflection on this to seem to float above the ‘iris’, by having the background slightly darker it makes the reflection stand forward. It should probably be shaded to get an apparent curvature onto the front of the eye. I used simple tools in my sketcher app on my phone to achieve this.