The only way I have ever gotten in touch with a designer is when I complimented Ross Gunter's work on instagram, to which he replied with his thanks. This shows he is quite easily contactable, and if I sent him questions there is a good chance he will reply to me.
I have just followed him on twitter, which could be a possible place to get in touch with him. The fact that he isn't a widely famous designer is helpful, as it is harder to get responses when they are more famous.
His email is - ross@rossgunter.com
