I do not have an ASD diagnosis, but I have ALWAYS had a hard time making friends an carrying on a conversation. I have found that if you show an interest in the other person, that helps. Find something to pay them a compliment on and then maybe ask them a question or two about their background. Stick to simple things like "How long have you been going to school here?" "Do you live on campus?" Most importantly, know when it is time to end the conversation. You do not want to seem desperate for companionship. And remember, people who go to art school are generally pretty accepting of all people...don't be nervous! Good luck!