This is a wearable muslin of McCall’s 3919 to see how A likes this style. I took in the sides a little and just did a little machine embellishment using the cams on my Elna SU and added a small piece of white crocheted hairpin lace I made decades ago. The lace was yellowed but I just washed the blouse in a load of towels using some bleach, and it looks fine now. I haven’t yet put the elastic in the sleeve casings, because of the bleaching, but as soon as I do, the blouse will be done. Even if the style is not her favorite, the blouse will still be useful for wearing around the house.
It is a simple raglan style, and I put a bias binding around the neck instead of using the facing patterns. I think it would also work to have contrasting facings turned to the right side and stitched down with embroidery.