This is the final version of my TIBI knock-off!
What is really cool is that it can worn over a tissue-weight black t-shirt when it is cooler:
Finishing the sleeves – I debated a lot whether to serge the armscye or to Hong Kong finish it. I ended up choosing to bind the armscye. How I did it: First I stitched a second row of stitching 0.25” away from the armscye seam and cut 1/8” away from this second seam. I cut bias strips of the lining fabric, pressed them in half and then in quarters lengthwise and applied them to the armscye.