See how the sleeves on the right are simply folded, not twisted, to meet?
Insert your sleeve lining inside your main sleeve, so that your two sleeve parts now form a tube. Match the pressed/folded back raw edges of the lining to the raw edges of the main sleeve, and pin together, ensuring that you're only pinning through one layer of lining – you're going to sew along that fold in the sleeve lining.
Sew around the raw edges of the two sleeve parts at 1.5cm (5/8 inch) in, taking care that you're only sewing through the single layer of the main sleeve and the single layer of the lining. This is tricky as the lining wants to slip around and it's all-too-easy to catch the wrong parts into the seam. I find it easiest to stitch with the lining uppermost, and to follow that pressed fold line.
Once successfully sewn, you'll have a gorgeous join holding your sleeve lining inside your jacket sleeve. The sleeve lining is shorter in length than the jacket sleeve so when you turn them the right way out the seam joining them won't sit at the cuff, but inside and you'll only see the main fabric at the ends of the sleeves.
Now we turn to the hem of the jacket. First, press up 5 cm (2 inches) all along the hem of the actual jacket (ignore the lining hem). At the front corners, where there's the cut-away, you'll only be pressing up 1.5cm (5/8 inch).
Open out the pressed-up section so it's flat again. Now fold back your Front Facings over the Jacket Fronts, with right sides together. Stitch along the bottom of the Facings, stopping 1.5cm (5/8 inch) from the inner edge (you'll stop in line with the seam joining the lining to the facing).
Trim the outer corner to reduce bulk.
You can actually trim off more than I've shown here...)
Now, take that free-flapping corner of lining and match it to the exposed corner of the jacket bottom edge. Pin them together, and then carry on pinning the raw bottom edge of the lining all along the raw bottom edge of the jacket.
Stitch all along the bottom edge.
Ooh, it's time to turn the jacket the right way out! Locate that gap in the lining sleeve seam and reach inside it. Grab the jacket inside and start to pull it through. It will be a squeeze and you'll want to be slow and patient, so you don't rip your sleeve seam open further. Just keep pulling until - voila! - you're jacket is suddenly free!
Hand-stitch up the gap in the sleeve.
Your only remaining raw edge is back down at the bottom front corner, where you have a little bit of Facing poking out. Tuck it under, and hand-stitch to secure.
Now, provided all is looking well, all that remains is to create your buttonhole and attach your button! (If you have no intention of ever doing up your jacket, you might as well skip the buttonhole.) Check that the tailor's tacks marking the button positioning work for you, and once you're satisfied with the position, create a horizontal buttonhole through the right-hand jacket front and facing. Stitch your button onto the left jacket front to match. Unpick any unwanted visible stitches and remaining tailor's tacks.
WE DID IT! Hurray, your blazer should be finished and ready to don and dance around in! (I won't say wear out and about, as that's not the way life is right now (#stayhome)). Here's a quick pic of me in mine – I'll be sharing more soon. I'm so, so pleased with how my velvet version turned out and have also run up another crepe one which I'll share soon to show you something a bit more spring-like. As for the velvet trousers I was making to create a suit – they were an unmitigated disaster! Everything went wrong; they've been abandoned. Never mind; I've enough velvet left to create a cushion cover so I can lounge in a particularly coordinated manner...
If you've created a Richmond using this sew-along, please let me know. If you've any other questions about sewing Richmond, again, just let me know. I hope to see more of your beautiful blazers soon!
Nina x