I've just received a linen shirt that I had ordered online. It's a beautiful colour and fit and the fabric feels a nice weight, but I've noticed a couple of flaws in the fabric and I'm not sure whether that's right. I have other linen shirts which were cheaper and feel lighter weight than this one, but don't have visible flaws that I've noticed. They look like threads that have caught or been pulled - can anyone help, is that what's to be expected for good quality linen or should I be contacting customer services? Thanks in advance