I love it

10/10 i guess there is nothing that i could say to improve on xD

Definitely 10/10 Would you care if I use it myself?

Specifics wrote Definitely 10/10 Would you care if I use it myself?

course not, I would be flattered

At the current placement, the tiger looks wabboly, has rough edges on the right side, does not match with the light source, does not match the overall coloring (isn't always a bad thing), and is placed poorly.

Wabboly
If you look closely at the tiger it looks like he's rotated at least 20 degrees to the right, making it look as if he's slowly falling over.

Rough edges
Not much to explain here. I screenshot the areas, but I'm on my phone, and I think they're easy to detect. I'm guessing the tiger was cut from another source using the pen tool. The way you traced it left a lot of sharp corner points.

Lighting
The tiger is unusually dark under his belly, and on lower areas on the right side of his body that just doesn't match the with the lighting of the piece. The darkness on the belly would exist (probably not as prominent, but would) same goes with the left side. The shadows are just too dark. Maybe also add a shadow on the left side to add some depth to the tiger, as of now it looks flat.

Coloring
When you bring in multiple elements from different sources you need to try your best to match their coloring so one doesn't appear to be obviously from a different source. It can be hard, but possible. The tiger is saturated way more than the background.

Placing
Since the tiger'a legs aren't apparent, he appears to just be floating on the surface. I suggest lowering him and making him bigger so he appears to be closer to us. When doing this you should cut off the lower portion of his body with the image's edge.