Pros:

+Original
+Not badly executed

Cons:

-Clips through the hands and the floor (i dont know if that is fixable though)
-The texture is poorly detailed
-Too bright and unrealistic (toy like)
-The strings look bad (too thin)

Conclusion:

Needs some huge improvements but it will look good if you fix those bugs.

Pros:

+The texture is good detailed
+Fits the L4D2 enviroment since it would be very easy to find wrenchs almost in anywhere
+Quite original
+Great model

Cons:

-Too shiny, maybe you should try making it more dirty or a little rusty

Conclusion:

Its great and in my opinion it should have been considered as a weapon included in the original game. Very good,, keep it up.

Pros:

Decently detailed
The stars improved the skin making it less plain and more attractive
The colors are not very bright (which i consider its a good thing)

Cons:

Not very original
Even if its supposed to be funny it doesnt really fit the L4D2 "enviroment"
My little pony related skins are getting overused in almost every game

Conclusion:

Decent, but as i mentioned these skins are getting boring and they are plaging every game, so its not very original anymore. But good overall.