[Question:] How to texture a model?

[FSP]

I have a "big" problem. I built a Mesh, but I don't know, how to texture this as efficient and "sexy" as possible.
The mesh seems good, but the textures are so boring.
That means:
so realistic textures as possible (foto-pictures) *1)
as few texture files as possible (the best would be one )
as small as possible.
(because the performance)



*1) I don't know how to get it (how to make).
My photos are always ...

Some WiP Pictures

The first Coaches are based on an "Liliput" Model:
dummy textures -> / <- the actual state of the compartment coach with brake-house (the vertex are not veld!)


The first coach of second line is based on an "Fleischmann" model and drawings of the Prussian Compartment Coach "AB4 pr 04".

 

[FSP]

The modeled "Fleischmann" coach above should finally look like this:

 

[FSP]

@Moderation
Ooops! Wrong sub - forum.
Can You move It to "Content creation" Support please?