I will prepare your vrchat avatar as you want it

Sure! obviously it depends if it needs something to be added, edited, or any other work for it, but i can do just uploads with minor works too!

My knowledge on blender can be used to edit clothes, accessories, faces, hairs and almost everything that is already created and shape it to a new form, for something created full for scratch i have a friend who works full-time with 3d modeling!

Of course!, i can manage pretty well with any kind of animation and/or blendshape since i worked in a lot of avatar with 0 facial expressions, and also animated a lot of scenes for a old series with friends!, the only thing is that i used MMD instead of unity so i lack practice with the animator!

I can work with nsfw avatars, on textures, modeling or anything that goes with the 3d model, but with some prefabs that VRChat uses like SPS or anything like that i don't have any practice and also im not sure how to test it, since it's a little unconfortable to test it, so it needs to be talked!

I can, yes, i can do both versions if is needed or required, and i can optimize them aswell, in many forms, but if you want something specific like the polygon count, u need to know that it will be depending on the avatar, since sometimes the avatar polygon count can just destroy the 3d in general

I can't create shaders, im not a developer/programmer and have very low knowledge about it, but yes i can work with mostly every shader that you suggest or want, however i prefer to work with Liltoon or Poiyomi to take a good use of it features, but it's not a restriction!

U need to buy it for yourself because mostly all of the clothes have licenses, and it needs to be linked mostly to you because you are the one that will be using the avatar!

Yes, i can work with any type of avatar, the only ones that makes a problem are the ones that doesn't match humanoid shapes, like quadrupeds animals, and i can upload it to your account, or send the .unitypackage file!, im not a very fan of sending the whole proyect but i can work with that too!