Answer:
The best way to write concisely and precisely is to start any writing with an outline. If you know where you are starting and ending up, anything that doesn't fit your outline will be extraneous. In addition, to write concisely, eliminate adverbs like just, really, actually, and all those words that end in "ly". They're not necessary if you use strong verbs, the energy of writing! When you're finished writing anything, run it through spellcheck, read it over again, and have one or two other people read it. That should help eliminate more fluff and keep your writing more precise and concise!
Hope this helps!
Andrea