For me, a good work is one that is able to express just a little bit of what I want to. That means I need some "inspiration" which can come from any where, or anything. A thought, an experience, something I read, I hear, ..... But that's just the less part. The rest is work, or method,... The more composition tools you know, the better. It doesn't mean you have to use all, but it you know them, you can pick them and mix them, etc... And that's how a music becomes expressive.
Even if you begin with a variation form or plan.... It's just a starting point. The raw or original material is only spot to go away, and make something new. So, all the techniques are ways of composition.
What I don'0t like, and I've told it many times is taking and style and copying it, "as exactly as possibe". Yes, everybody does it, me included, of course. I see it as a way of learning an processing the techniques.... And I respect people who writes that music, and I like it. But come on, we are on the 21th century and many things have happened to ignore them. I doesnt' mean we have to be in avant-garde movements and things like that....
Anyway, music is always welcome.
Having a method is hard, because it implies work. When I plan to write something "important" (by important I don't say long, but well structured), after I draft the first short ideas (melodyc, harmonyc, ...) I think of the style or styles that can fit to the mood I'm looking for. Tonal, jazzy, impressionistic, minimal, free atonal, dodecaphonic, polytonality, polychords, and a long, etc.... And even the combination of those. I think of the Form. Y plan the parts in the Form, drawing a tension-relax and climax pathway. I think in each part what instruments have to play the main role and how the will be added or not. And I begin to write, melody and bass parts first. Harmony and countermelody afterwords. Transitions, riffs, ornaments, the last. Dynamics everywhere (because they're needed).
After all this, dependeing on the piece, there is a second phase of mixing.