I love sigh language - have even before I started learning it - years before.
When interpreting I used SEE - Signed Exact English. But with my friend I think I used more ASL - probably a mix of both. This was way before the push for accreditation.
I hate watching those little interpreters in a box for some programs. They look so stiff. Their faces are cardboard. ASL is not like that. It is alive with body movement and facial expression. How anyone can sit there and be so stiff is beyond me. Do the deaf actually like this? Or is it a case of stiff being better than nothing.
I remember one convention I was signing the drama with a really good interpreter - his mom was deaf so he was a natural. At some point in the drama we turned just a fraction towards each other and were talking to each other. It was a moment of being in "the zone" as some people say. Everything else disappeared and we were acting out the drama. I would have kept going but he stopped and turned back to the audience. The moment was gone. Afterwards a few people came up and said they saw it happen and it was good. But even without that continuing both of us were good enough to give a lot of expression to the drama. His body and facial expression matched my own - or maybe that is better put the other way around. Mine matched his.
Signing brought me out of my shell. I was very shy and never looked people in the eye. Signing forced me to stop that and helped me find a voice.
Bluecanary
A great way to improve your speed and skills is to practice signing songs. The rhythm of the music will move you to sign faster. I always did this when I was teaching and people loved it. It helped to build a natural rhythm for signing.