A friend of mine was invited (several years ago) to be a guest puppeteer on Muppets Tonight. While she was hanging out with Steve Whitmire, he suggested that she gain performance experience by starting her own cable access TV show.
Many towns/cities offer FREE classes on how to produce your own TV show. I used to work in the cable TV industry, and trained MANY people. The studio I worked at had very nice equipment, and it was available to the public to use...FOR FREE! Not many people used the studio, so I would make music videos for local bands.
Now that I have got back into puppetry, I am scripting a series that I will produce and direct at our public access TV studio.
Check what your cable system offers. This would be one way to learn how to perform for TV, and make a demo reel to show to future employers.
Have fun too!