Those colorful antenna on top aren't helping with the camouflage.

Maybe a little darker but what's making it stand out the most is that it doesn't have the same texture as the rest of the body.

It was like that on the reference photo, but I'm concerned that it's too stark in the art version.

It was like that when you got there, yes? X3

It's called a roach and it's intended for dancing. You can see what it looks like here:
https://www.youtube.com/watch?v=02Mfk-5eKis

Oh yes, that definitely won't help stalking prey. Although, if it's like a weasel or a stoat they can dance for it! X3

Beautiful kitty!

I guess it all depends on where you want the sun to be located in the picture. If you want it on the lynx's right front and low in the sky, you could darken the leg a little. However, if you want it on the other side of the lynx, you may want to darken the leg a lot more. As I'm sure you know, the location of the sun in the sky determines where and how dark the shadows are.

The sun is low and on the lynx's right, in front of it, but I do think I'll darken the leg a bit.

Yeah. A little darker would work (especially since the lynx is mostly grey in color). The sun would lighten the grey a lot. (In case you're wondering how someone who isn't an artist would know this, I used to be a photographer when photos were taken with film. Is that old or what? LOL)

I had a Brownie when I was a kid. How's THAT for old?

I haven't of them for a long while.

Oops. That should have been, "I haven't heard of them for a long while." LOL

After looking at the drawing again, I see that you've already done the suggestion I was going to make.