Custom skin and Wheatley looking at player help
Ignore that last post except for the end, I dodnt see the page 2 button. (Major akward face)
Musical website Moddb
By the way, I did mean mod, like what goes into the sourcemods folder. Sorry for the confusion.
Musical website Moddb
Man, please forget about the moc idea... if you think hexing a model is complex, I bet the mod idea would be worse for you 
Attached to this post are all the files you need already prepared. I hate to do things for ppl because I would prefer that you achieve it by yourself, but at least you tried hard 
It's a zipped file with 2 folders: materials and models. Those folders go into portal 2/portal2 so copy that file and unzip it there, and when it asks you to combine folders say 'Yes'.
As I told you above, after you unzip this file the way I just explained, you'll have these files for the models (into the folder materials/models/npcs/arachnophob_sphere):
- personality_sphere.VMT
- personality_sphere.VTF
- personality_sphere_glass.VMT
- personality_sphere_glass.VTF
- personality_sphere_light_damaged.VMT
- personality_sphere_light_damaged.VTF
- personality_sphere_clean.VMT
- personality_sphere_clean.VTF
- personality_sphere_lights.VMT
- personality_sphere_lights.VTF
If you only need 1 custom eye, just name your custom eye VTF image personality_sphere_lights.VTF and drop it into that folder, materials/models/npcs/arachnophob_sphere. If you want a custom damaged eye, you need to edit personality_sphere_light_damaged.VTF... and if later you want to edit its body then you have 2 skins: personality_sphere.VTF and personality_sphere_clean.VTF
THAT should work.... for sure. So try and let us know!
Regarding your proposal, I'm glad you like my maps and I feel honoured that you want me to join your team, but I can't, I'm developing my own mod and it takes me already more time than I have, and I've already done many side projects in the way 
Thanks anyway! and good luck with your work! 
useful tools and stuff here on TWP 
[spoiler]
[/spoiler] Thank you again. I figured out the workings of the hex editor (things just werent clicking in my brain telling me the obvvious.), and now in the authoring tools' model browser, I can find the correct .mdl file!
But,
*dramatic music starts playing*
whenever I go to open it up, I get an error that reads nothing more than: Error opening the file.
I attached the files I used (Note: When you open the file with the eye, I didn't change the texture yet, so it will appear as Wheatley normally.) I can't seem to find what I did wrong, but if it's unexplainable, or i'm just too stupid, I have backup plans.
Musical website Moddb
You're sure you didn't insert or delete anything in the file? Only overwrite or it will trash all the pointers.
Also, don't change the model name near the bottom. AFAICT it does nothing but crash the viewer if you change it. Only fix the one at the top.
@Arachnaphob: I checked your files. First of all, for the personality_sphere_skins you changed the name of the model itself to thompson____sphere_skins.MDL, not the folders as I suggested you:
I guess that was only a silly mistake, that's why you keep receiving the error "model doesn't exist" or "error loading de model"... instead, just change what you've got by this:
The bottom part is ok, I guess.
Take into account this other thing when hexing a model in addition to what I already warned you about: you can't use the backspace key to delete any character you wrote wrongly... check out that if you do it, all characters will move 1 position back, while when you enter a character you insert it, therefore you don't push the rest of characters 1 position forward, ok? If you need to correct anything wrong, just navigate with the arrow keys back and rewrite whatever, don't use the backspace key.
useful tools and stuff here on TWP [spoiler]
[/spoiler]Well, still can't get it to work, even after I tried your suggestion... I guess I'll stop causing headaches and pain and just use the space core. Thanks for all of your help, by the way! I'm real happy you were able to stick through this. Guess no Thompson eye for me then. Are you sure you can't just somehow edit a skin and not create a new one?
Again, thanks for your help! Expect an epic custom story to come soon (not really, its huge) with lots (like 2) of new characters and plot twists and all of those goodies. Again, thank you so much!
-arachnaphob
Musical website Moddb
Man, seriously, have you tried my files? As I told you it's very delicate to hex model files, unless you know what you're doing... I've tried my best to let you know the way, but if you still can't manage it, just grab the files I posted, ok? They're TESTED. I told you what VTF texture files you could edit and how to edit the VMTs... just try it before giving up, ok?
useful tools and stuff here on TWP [spoiler]
[/spoiler]I've tried them, and no matter what, I get the famous black and pink missing texture. The model can actually load, though. Maybe its just time to validate again. Ill edit this post when I get the chance.
Okay...
after validation, still no luck. The model viewer says that it failed to load one or more .vmt files. Now i'm using your model and swapped the textures for the ones I need, but still no luck. It's pink and black. By the way, this is my first time working outside hammer but on the source engine, I guess you could say, so i'm kinda new to this stuff.
Musical website Moddb
Look up Mecha the Slag's MDL Hexer.
Oh if you need to convert the VTFs to 7.4 here is a program that does it: https://dl.dropboxusercontent.com/u/16218991/ASVTFC.exe
The more you give, the less appreciated it will be received.