Pros:

Fine detail on the surface of the object
Parts of it glow brightly, making it easier to spot in the dark
No glitches visible while either on the survivors' backs or out in the open world
No bugs so far
It just looks really cool ^_^

Cons:

None to note

Conclusion:

A well-made skin for the medkit. Good detail and no glitches or bugs. And it glows. Very cool.

Pros:

She looks freakin' gorgeous!
Great detail on the body and clothing
The clothes flutter with the body's movement
Custom first-person hands
Facial expressions (yay!)

Cons:

No change to character icon or name

Conclusion:

This... is amazing. I get the feeling you paid lots of attention to details like separate articles of clothing moving with Lightning's body. While Zoey is great, your model of Lightning is a damn fine replacement.

Pros:

The skins work perfectly; no glitches or bugs.

The M16 replacement (the Blackfox I think) looks incredibly awesome! The green dot sight is a really nice touch and the the weapon overall looks badass. I also like how you changed the M16 icon to fit the Blackfox. Nice attention to detail there.

Shotgun and sniper rifle looks great too; their brown colours would be fitting in a desert setting. Though there aren't any deserts in L4D2, I get the feel that the survivors were using the same weapons that the troops did in Desert Storm.

Cons:

None whatsoever. 

Conclusion:

These weapons are a blast to use, especially the Blackfox! It makes me feel like I'm engaging in actual warfare. You managed to achieve the goal of getting the player to constantly use your skins in-game. I keep coming back to the Blackfox; before this I hardly used the M16. You got me enamored with this gun. Great job! I hope in the future you replace the auto-shotgun and sniper rifle with more badass counterparts.

Pros:

It works just fine! No glitches!
The white paint doesn't glisten with unnaturally high albedo on higher shader settings
Looks a lot cooler than the regular AK-47

Cons:

None I can find

Conclusion:

A very decent skin for the AK-47. It makes the weapon a pleasure to use =)

Pros:

The digital camo makes the spas-12 much more distinctive
No bugs or glitches while skin is in use

Cons:

The skin starts to dissolve somewhat when shader settings are high. Setting shaders to a lower value will result in an overall darkening of first-person character models and loss of sky texture
Though it is, as you say, a simple re-skin, it would have been much more attractive if modded sounds are included

Conclusion:

There's something about the look of this gun that makes me want to pick it up and use it. On that point alone you get high points from me since you've impressed me with a skin that I'd like to use again and again :D However, I do take issue with the loss of detail on higher shader settings, because lowering them will affect the look of other things in the game. I use the Zonebox mod and with the shaders low, the sky becomes blank with no beautiful stars in sight. Also, while it does look fantastic to me, I would have enjoyed some custom sounds to replace the original (IMO the original spas-12 sounds are a bit too shrill). This is a good skin, but the shaders issue does hinder a higher score.

Pros:

The white paint makes it look more cutting-edge than black
The body doesn't glisten with an unnaturally high degree of light reflectivity, even on very high shader settings
It just looks really, really cool :D

Cons:

I can't find anything wrong with it, so I suppose it's as close to perfect as it can be

Conclusion:

I couldn't see what it looks like in detail because the preview images didn't load (an issue that's experienced by other mods on this site). So I downloaded it, played the game, and felt surprisingly impressed =D The absence of high albedo on this gun took the cake, especially with such a light-skinned body. This is a really nice skin for anyone who wants a different look for the military sniper rifle.

Pros:

The shirt and pants fit perfectly; not too tight, not too loose
Green camouflage scheme fits with Ellis' "go-to" attitude
No washed out colours or pastels in different lighting conditions

Cons:

None

Conclusion:

I downloaded this about 2 weeks ago and have been using it ever since! Highly recommended if you're tired of Ellis' regular outfit.

Pros:

Red colour seems very appropriate for health-related items
The ECG waves are animated, looks freaking cool
Sharp detail on the labels and dials

Cons:

None I can see

Conclusion:

A very well-made skin. This will go with my other mods in L4D2 to make the game more suited to my tastes (=