Thanks @m1alsan. I'm glad you liked my artwork and very grateful for your encouragement. :-)
...but first time I heard about the "show me the bird" idiom.
I had indeed worried that the bird thing would only have a very regional meaning.
How do you do that in your language?
There are several gestures but one of it is something like this below. You point your finger and circle it on the air next to your head :)