A few notes about my compositional style:
I score quite simply. Now, that might be an exaggeration because I also like to score thickly as well. I originally started writing for concert band in about 2008-2009 (prior to then, I had just stuck to jazz compositions). So in the last 4 years or so, I have developed a method to producing consistent results.
First, I start with either a brass (2 trumpets, horn, trombone, tuba) or string quintet (2 violins, viola, cello, string bass). I then construct 5 parts basically all independent, yet all connected at the same time. (Sidenote: This also works great when making a brass/sting quintet of said concert band pieces).
I get a basic outline for the piece, mostly just notes, time changes, tempos, key changes, and most importantly, and end. (If I don't get to the end at least in a day or two of beginning the project, I usually don't finish it). After that, I fill in the dynamics, expression marks, and anything else needed for performance. I'll even add harmonies in for supporting parts in at this step, but it varies depending on the color I'm trying to achieve with the sound.
After I'm after with how the quintet sounds like, I'll try to expand it to a concert band score. Now, I don't usually use a lot of instruments like other composers do; for example: extended family instruments like contrabass/contralto/Eb soprano clarinet, bass saxophone, timpani. (There is potential to use these or other instruments as speciality, but not regularly). So, with the concert band score complete (which takes a good bit of time), I use the in-board mixer to make sure that the MIDI mock-up sounds presentable with instrument balance and effects. It's not the real thing, but it's pretty good.
Sometimes I go back and view my scores and make modifications to improve the legibility, effect, or add new ideas to the score.