The Art of Tracing

So I got bored tonight and somehow got the urge to trace via photoshop. I have to say, it was incredibly relaxing and I was so excited to see the finished product. This is my very first attempt to ever do this & its kind of hard using your couch as a mouse pad but I did it! I wasn't sure exactly what tools other people used in photoshop for this so I had to wing it & guess. I think I did pretty decent for my first go around. I cannot wait to practice more! Anyone have any tips out there that could help?