it looks like you blacked out a major element which might be against the rules.. but what every my point is that you can tel especially arround the legs. nice saturation on the tiger.
The black in the background looks really fake, it is really hard to work with grass, so I suggest people shouldn't do it. It would have been great if not for that detail
Fantastic shot for several reasons. I think tigers are absolutely the coolest and you've really got a great focus on the colours. It's pose is very tense, and you've added to it marvelously with the framing space to the right. The black background looks a little funky where it meets the grass, to the point of appearing Photoshopped, but the black sure does set off the orange & black of the tiger.
I like your use of a black background in this picture. The only thing is the grass at the edge of the black is a bit soft where the other background used to be. The background creates a nice sense of drama with the tiger. Well done.
interesting. the tiger is very sharp and has exellent colors...but i'm not sure about your background. it looks like you went over it with the airbrush tool or something.
even tho this is an advanced editing challenge, if you did what i think, that would be against the rules(removal of major elements), and might get disqualified. just a heads up :-)