Thanks, all.
For anyone who would like it, here's how I do my pattern matching, in this case just for the stripes on my jumper which is one direction only on the matching.
Most of my patterns are traced from the likes of Burda and Ottobre magazines. I never add seam allowances when I trace, prefering to draw these onto the fabric around the pattern pieces that are laid on the cloth. I find this gives me better accuracy and also more flexibility if I want to use different size of seam allowance.
For pattern matching, it's much easier without seam allowances. All I do is ensure that the point of the armscye/side seams is exactly aligned for the front, back and sleeves. I never try and match from the top of any of the pieces as they vary too much and you notice the alignment far more across the main torso of the body, so this is where I choose my area for the matching to be. The photo below shows what I mean - it really is simple when you do it this way.
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