I have sewn this pattern before. It was the first time that I've sewn shawl collar and had to look for some videos on Youtube and check my sewing Bible. Eventually it turned out great! But unfortunately my first blouse was a bit tight at bust as I probably didn't scale it properly. And now, I'm afraid I scaled it a bit too large. But large is better than too small. I prefer clothing from woven fabric to be a little bit roomy. Also I have some room for French seams. I have used black gingham fabric again as with my previous blouse. I think gingham is super cute! The pattern contains only 4 pieces: front, back (to be cut on fold), front facing and sleeve. The pattern has no darts, which is strange, but I was explained that the blouse pattern contains "invisible" dart. It's created to drape without dart. The pattern illustration looks like the blouse has darts which is very deceiving. The shape of the blouse looks quite modern and boxy when made, which is excellent for everyday wear and which is what I'm looking for in clothes. Just for the blouse to look proper feminine I will sew fake bust darts because I prefer that. The pattern Practical 9447 is believed to be published at the end of 40s to 50s. There is no exact date printed anywhere on the pattern. Practical is English pattern company. Pattern has no seam allowance included, so when I scaled it to fit my 42" bust, I have added 1/2" seam allowance. Also 1 inch for hems. I have checked the original pattern and it has 5 inches ease at the bust.