Jward, I'm not going to pick on your mount though it has several issues. I am going to pick on you acorn attachment. Yours is just like thousands of others I've seen who "superglue the acorn". Whether it's super glue, epox or a nail, it's still WRONG. Look at the toes of the squirrel. I've seen then on THOUSANDS. Then look at a real squirrel. Those toes are it's "fingers" and it grasps an acorn and turns it in its paws as it eats. Instead of the "palms" holding the nut, it's the toes that do it.
Now the fix. Holding a nut should NEVER be a problem - EVER. First off, BEFORE YOU BEGIN MOUNTING, have the nut you intend to use. See if the front paws come close enough together once the toes are attached. If not, MODIFY THE FORM NOW (I show some of that in my tutorial on case skinning small game (
http://www.taxidermy.net/forum/index.php/topic,89688.0.html). Once you have that done and the toes are skinned out down to the claw, start mounting. Roll clay lines and "stuff" those toes, but mount your animal without the nut. When the animal is groomed , set it on your diorama. Open the back toes so that if it were alive, it wouldn't fall over. Place the nut between the front paws.
This may take some juggling as it's tedious, but OPEN THE PAWS. Spread the toes around the nut so that it COULD hold it in place. Then with a thin strip of masking tape ( I lay a strip down on my work table and cut it into 1/8 inch strips) WRAP THE PAWS AND ACORN TOGETHER. Leave it alone for 2 to 3 days. After that time, you can remove the tape and arrange the toes even better if necessary. RETAPE it afterwards and let it set until dry. There's no glue to hide and the squirrel isn't holding the nut in its palms any longer. Superglue is for gasoline asses. Slow down and do it right.