@Black Stormy: There are a couple of things that bug me of your model:
1- The forehead, where both eyebrows would met (if they existed) is too wide. Notice how (in the references) his eyes are parallel regarding their inner line. Also his mug should be more thin.
2- His ears are too tall and thin. Notice in the reference they almost touch each other at the bottom and they´re more conic.
3- The wrinkles in his t-shirt make it look like he´s a beefy man with prominent pectorals. Usually a rabbit would have a pronounced belly.
4- The jean yarn should be straight, right now it looks diagonal. Also I would desaturate it a little bit.
5- Finally his foot could use some more detail in the toes. Those foots look like from 1998.
Besides that, great work. For the fur I would have used something like this:
You know since that model is mostly going to be standing it is okay if you make the shading in the fur aiming down (like if it were lit from the top).