You have to decide what are the things are you want someone to know to be able to find you. For me, it's important that folks 'like' my FB page so they can get updates of my new stuff, so I have it nice and big along with my artfire shop. No phone#, why would anyone need my phone, it's isn't a brick and mortar and I always reply to emails quickly although most people wlil post to my FB if they ahve a question or comment or contact me thru my shop, so many ways to get ahold of someone without needing a phone #. And again, if it isn't a brick and mortar, why would you need your address on your card. You might put what you do as a title, yes, but make it what you want people to know, feel free to personalize it, if your shop is flashy, make your title flashy, 'fashion designer extraordinaire', if you like, clothes designer if that's what you prefer...but what you put there is what folks will read and how they'll perceive you and your business.