Don't just tell them to send me a screenshot. I don't let people in just because they can send me any old screenshot and I've been getting way too many of them lately where someone in their chatbox is saying something along the lines of "send Cit a screenshot and he'll let you in". To which I then have to redirect them to the sticky explaining what I want and wait for them to eventually get it right.
If you want to tell someone what they have to do to get in here make sure you know what they need to do to get in or just tell them to look for the sticky.