Like others have said, deciding what you want out of photography is a good idea.
Take writing as an analogy. If you keep a diary, you might not be too concerned with how you write. You're probably doing it for yourself. If you publish it online, perhaps family and close friends will tolerate (to a degree) incoherence and inability to tell a story. But if you want to reach a wider audience with your writing -- with witty blog posts, or short stories, or novels, or whatever -- you better study and practice the craft intensively. Every day, for years. See what works and what doesn't. Learn about narrative structure, characterization, dialogue, point of view, etc. Learn
how to make other people care.
You mention a bunch of great photographers on your
flickr profile. If you look them up, you'll notice that nearly all of them studied photography/painting/design and/or worked as assistants for years. Doing the same is not a bad idea, if indeed you want to make "art" that others care about.
Go to a library and find books on composition. Or google it. Study the principles (lines, shape, proportion, perspective, contrast, lighting, negative space, etc etc.). Study paintings, pictures, and see the principles at work (or not). Borrow books by your favorite photographers and actually
study the pictures. Not just individually, but also how series of pictures work together.
You write that you have a Leica and shoot film. How about doing taking Mike Johnston's advice and doing the "
a year with a Leica" exercise? (See also
here.)
Again, all this depends on what you want to achieve with your photography. (But even in a Facebook status update, a well-formed sentence doesn't hurt.
🙂)