Heya ns — unfortunately, i don’t have any specific strategies for your t-shirt with a small neck opening, that also would in shape effectively on another person with broad shoulders and thin arms. 5.I don’t see an RN # and I have purchase 6 in the Nordstrom “home manufacturer” and https://briotee.com/product/vgi-sasha-colby-merch-neck-crack-long-sleeve-shirt-mybestjudymerch/