Why when I unwrap my model does the field for the Torso come out so strange? I have been trying for the last 2 hours, fiddling with where I have placed my seams and either the torso or the legs end up like this. If someone could please tell me what it is I am doing wrong.

I would like to note this is one of my first proper modeling projects with Blender and one of the first times I've used the unwrapping tool so I am unfamiliar with it.

Thanks for your help]1
I am pretty sure you are unwrapping the mesh wrong. You have it unwrapped in a sort of round ball shape on the UV map. If you unwrap it with cylinder projection, cube projection, or even just select one side of the chest and unwrap it that way, it will be more square-like/flat. That would work a bit better and you would not have stretched textures.