It's a very different game than group games. What are you trying to get from a 1-on-1 game? I've done them in the past, and it is much more intensive for both the DM and player. If you are only doing it because you are shy of groups, I would say do your best to join a small group of players. A small group experience (2-3 players) is more robust, just because you have more differences of opinion as you involve other players. A single-player experience really misses that. On the other hand, 1-player games can be very character focused, and make for a great shared storytelling exercise. The DM and player really need to know what they want from the story though, or they can just end up wandering around a lot. If you are interested in a 1-on-1, PM me and we can discuss details.