1. Asking for feedback in a way that will result in a constructive response
2. Accepting constructive feedback
Just a few days ago I asked people to rip apart my consulting page , and I received a handful of truly excellent feedback; some positive, some negative, but all were constructive.
PS - Glad to see you're using a gag cartoon instead of just a stock image. For anyone else wanting to do the same (it gets more engagement than stock photos), I run a side project that helps you find and license these cartoons easily and cheaply . I know Jason Cohen (of WPEngine) uses similar cartoons.