This diagram explains it all - lapels, pocket flaps, centre closure and sleeves.
You gotta check out the comments on the cutterandtailor link - keep scrolling past the pictures - you thought I was being fussy!
There are two main accepted methods of ensuring a match of the horizontal lines on the sleeves and I think it's down to personal preference rather than a right or wrong. There is only a match at the front as the back sleeve is streamed stretched at the elbow for a better fit and the sleeve insertion at the armhole pulls the sleeve forward.
Method 1 - Perfect cutting out. Lay out all pattern pieces so that the notches and marks are positioned at the same check point on the fabric. This should ensure that all the top seams finish at the same point.
Most advice I read recommends not cutting the sleeves out at all until the jacket body is complete. There is undoubtedly a bit of shifting in the fabric as you sew and make adjustments for fit as you go along so that the checks shift accordingly.
I've used this method for other patterns but I was a big scardy chicken in this instance. Fabric was limited, no more in stock, I couldn't afford to take a chance, nor did I want a sleeveless hacking jacket - it just doesn't look right.
Method 2 - Mock sleeve
Make a muslin sleeve and insert it perfectly, as if it was the real thing. Check the fit. Turn the jacket right way out and with your colouring-in pens draw some horizontal lines across the mock sleeve that match the jacket front. I used the horizontal pink ones and took great joy in using a pink pen too.
I had to put a little 'R' on mine - that's R for right hand side!
I think my brain is giving up :/
Rip out the mock sleeve, press and use this as your pattern piece on the checked fabric. Positioning the coloured lines on the horizontal lines of the fabric.
As with the whole jacket, I cut one at a time. Cut one, flipped it, positioned it exactly on the checks, chalked around it and cut.
And at last.....
I'm quite happy with the match-matchy thing and have followed (tried to) all the rules those men's tailors insist upon.
Don't tell those boys over at cutterandtailor - they'll be bound to find a fault somewhere
Onward to a nice, simple, plain lining.