Pretty cool idea, not a bad job at all. If I could make one observation, that would be about the shadows of it's wings. Maybe lower their opacity slightly would help. Also you might add some wing shadow to the left foot of your frog.

The wing shadow's opacity is already lower than the body shadow in the source pic. Shadow added to leg.

A brief lesson on shadows: The closer a thing is to the surface upon which the shadow is cast, the darker the shadow. Notice the shadow of the frog body is darkest, as it is closer to the wall. The wings, being higher up, cast a slightly lighter shadow. To observe how shadows work, look at the foot against the white wall...the shadow is very dark right at the wall, and fades with distance.

It also depends on the nature of the light source as to how sharp a shadow is cast, assuming the light source you are 'using' is slightly diffused, you are pretty much spot on IMO; otherwise something that close to a surface would have sharper and darker shadows all around (depending on the nature of the surface)...

It looks as if you have tweaked the shadow since my first observation, for the better I might say. At least you made some shadow...lol
I think what was/is bugging me is the color of the shadow. The shadow area where the wing joins the body on the right side at the rear just beneath the wing itself, could use some attention IMO. (noticeable in the high res)

I like the chop itself and your concept. You've done a commendable job blending the wings and tail, Good luck author.

Okay then....whatever you say man.

Very nice GL

nice blending of the body and the wings -- like the colour as well

Dragons and frogs! Awesome! I love it, and think you did a great job blending the wings and frog body.

very realistic ! Good luck author

Nice blending of sources.... good luck!

Well blended, good pick of sources. The simple division into two planes works very well.

Brilliant work. Awesome. Well done !

Congrats Bob!

Congrats!!

Congrats!