Sloped Shoulders and Suit Jackets - a problem and how to fix it

I did the alterations in a livestream on Twitch. I speak mostly German in them, but you are still very welcome to stop by and say hello: / vintagebursche
Instagram: / vintagebursche
Blog: vintagebursche...
Support my work and buy me a coffee: www.buymeacoff...
Our sewing ebook (including patterns): vintagebursche...
Deutsche Version des eBooks: vintagebursche...
A list of shops and brands where I shop clothes: vintagebursche....