The instructions were intended for bits, like Lara's back, where TR maps a rectangular texture on to a trapezoidal part of Lara's model. In those cases, you actually want to find an appropriate texture that is the same trapezoidal shape as the part of Lara's model, and then transform it into a rectangal so that TR can use it.

Lara's chest must be a different case, perhaps with TR mapping a trapezoidal subpart of a texture onto a rectangular part of Lara. I hadn't considered that. Great, if you've found a way to handle it. Strange though: I thought Lara's chest was a direct rectangle mapped to rectangle.

Ah, hang on. Are you using a screen capture as a starting point for designing your texture?

Eh? I think we're talking cross purposes.

Your sample *starts* with a trapezoidal shaped texture. But all my textures start as rectangles, cos I work directly on the rectangles captured by Glidos.

For your instructions to work with rectangular textures, one needs to know the size and shape of the trapezium that the texture will be mapped to. The only way to find that out is to grab a screenshot...

You've confused the hell out of me! 😉

This image should make it clearer:

Right! Got you. As you say my instructions start from the result of your first transformation. They were intended for someone capturing real-world images, where there's no need for your initial transformation. But, yes, if you start from images captured from Glidos, then the thing your starting from is skewed.

Anyway, your results show you are clearly doing the right thing.