I'm gonna have to start screenwriting

I've decided it's time to learn how to write a screenplay. I've written plays, short stories, and articles, so the next logical step is of course, to write a screenplay. I'm encountering two psychological barriers, however.

First...
I know films, I've just never written them. I've read a couple screenplays and they include a lot of language about the kind of shots required. Yet, I know only a little about that. I wonder will potential readers of my script be so put off by my clumsy visual concepts that they miss any skill in dialogue and storytelling that I demonstarte?

Secondly...
When one says, "I'm writing a script," the hearers obtain a glassy-eyed respect for the intellectual, literary endeavor being undertaken. The man who utters such words must certainly smoke pipes, listen to public radio and cringe at improper grammar.

When one says, "I'm writing a screenplay" he has successfully grouped himself with every desperate Hollywood half-writer, half fan boy that probably spent a good deal of his early literary work on episodes of Star Trek that feature lurid scenes of himself and 5 of Nine on the holodeck.

Interestingly enough, one of the above obstacles belies a lack of confidence in myself while the other belies my desire to shroud that insecurity in the trappings of culture. Pride and shame nicely wrapped into a spring roll of writer anxiety. The answer, is of course, to shut up and do it. But I could hardly call myself a writer if I didn't partake in a little smarmy self-loathing as I began the process.

Well, thanks for listening, 5 of nine.

End program.