Hi,I am an amateur artist too so I don't feel quite up to giving you an "orientation". However I can tell you that the first of your drawing (although it's difficult to see details in that image) is the one I like better, reallyyyyy better. It's dramatic, it tells a story, it's shocking. The bird is good, yes, but I have seen similar drawings by several artists: it's not new. Now the first one is: if you are able to draw other drawings in that style I think you should at least try and see where it leads you... You have nothing to loose!
And don't hesitate to post here the drawings: I for sure want to know what you are going to draw next!
Anne-Claire Tavares
http://www.studio224.com/