More 3 view woes...

Once again I've got into a mindset that I'll take up modelling (and more than likely will give up soon enough), but this is actually the furthest I've ever got, so who knows... 
Anyway, I've been using this tutorial to create the plan views to at least allow me to ATTEMPT to start the actual modelling process... but I'm only half way there.
As you can see, I've got the top view about right, nothing wrong there, but then it all begins to go wrong (surprise surprise) when I try to do anything else. Like so:

I can't figure out for the life of me why the left viewpoint flips round, cuts off at the nose, and places the rest of the bitmap at the tail, and why front/back bitmap has decided to rotate itself, despite the original being in the correct position (as you can just about see in the material editor window).
These are the views I'm using (obviously larger than this):


I'm sure someone knows what silly mistake I'm making, or an easy way to resolve the problem.

Anyway, I've been using this tutorial to create the plan views to at least allow me to ATTEMPT to start the actual modelling process... but I'm only half way there.
As you can see, I've got the top view about right, nothing wrong there, but then it all begins to go wrong (surprise surprise) when I try to do anything else. Like so:

I can't figure out for the life of me why the left viewpoint flips round, cuts off at the nose, and places the rest of the bitmap at the tail, and why front/back bitmap has decided to rotate itself, despite the original being in the correct position (as you can just about see in the material editor window).
These are the views I'm using (obviously larger than this):



I'm sure someone knows what silly mistake I'm making, or an easy way to resolve the problem.
