McDonald's didn't start out as the world's largest chain of hamburger fast food restaurants. None of us learned algebra before we learned addition and multiplication. Babies aren't born walking. The United States of America wasn't built in a day.
And your first writing project shouldn't be a novel, screenplay, or other large writing endeavor.
Start with the small stuff--short stories, articles, journal writing, newsletters, essays, or even blogging. Build your writing skills by practicing on the smaller projects. Notice I didn't say the easier projects; smaller doesn't necessarily mean easier. Smaller projects just tend to be more manageable as you're learning.
Once you've mastered smaller pieces of writing, then write that next great novel.
Visit me tomorrow for your next Writer's Leap 366 lesson.