Your concept is pretty interesting, but traditionally artists like to explore the theme of self-portrait to make a point (actually, it's true of all artworks: to make a point - at least this was what I learnt at school).
So, what was the point you were trying to make?
Technically, as many have pointed out, the image on the LCD screen is too dark. Lengthening your exposure may help.
Or you could just take yr portrait using a proper camera, scale it in PS or some other photo editing software and paste it over the image of the LCD screen. Which is what you see in most of the graphic ads.