Is it easier to sell a script for TV?
It depends. The hardest scripts to sell are often "MOW's" (Movies of the Week)
and animated features like Hercules and The Lion King. Both are usually developed
"in-house" which means the studio or network uses its own writers who are already
employed and have written for them in the past, meaning it's closed to
freelancers.
Television writing is the most popular means of starting out and breaking into
the business because the expectations of the script are clearly defined. That is,
the characters and the way that they think, act, and speak have already been
established.
That said, let's assume you want to write a script for the sitcom "Will and
Grace". You would not want to send a "Will and Grace" script to the writers and
producers of that show because they're likely to pick out any errors and
inaccuracies that you might make, such as giving a character a line of dialogue
that he or she would never say. When that happens, you lose all credibility.
Instead, pick shows that share some of the same themes and boundaries--try "Dharma
and Greg" or "Frasier". It doesn't matter if the show is off the air. The point
of this exercise is to prove that you're versatile. The logic is that if you can
write for "Frasier", as well as "Diagnosis Murder", you might be able to pull off
a script for "Will and Grace". If the scripts fall into the right hands, and the
producers like what they see, they'll then ask you to write a script for their
show. Understand that this doesn't mean they'll buy or produce it, but if you
manage to make it this far, consider it a positive gauge of your ability.