JavelinJoe If you've already done it, feel free to rewrite it. Rewrite is good practice.
The self-editing process is always the hardest. Now there are many stages to an editing process, but for now lets focus on the content. You'll always feel that every part belongs because, well, every part DOES belong. The thing is, its your story, and that thing is your baby. You've followed the structures, the cycles, and the tested-and-true cliche plot lines. You have your baby, made from your own blood, sweat, and tears. It's cover art is the flesh, it's prologue is the baby's first words. It's meat and bones were woven by you yourself. How could you not be proud?
Something is wrong with your baby though. Your baby's ill. You've checked up on your baby—eyes, cheeks, and tongue seems fine. A few scrapes and cuts, here and there. But regardless of what you do, you can't fathom as to why there is no spark of life in your baby. Something seems missing. What to do? Unsure, you take your baby to the village doctor. The village quack, they call him.
Why was he the quack? Its probably because no one can understand him. Regardless, the magic he performs with his hands are amazing, as crazy as it may be. Hesitant and unsure of the rumors, you approach the village quack with your lifeless baby in your hand. He is, after all, the village quack and you're unsure how much you can trust him. That is, until he took one look at your baby and furrowed his brows. No, not the kind where you're concentrating so hard that your brows furrow together, nor is it the kind where there's the onset of an impending migraine. Rather, it's the eyes of someone whose face says, "What in tarnation is this that you bring to my doorstep?"
You see, what you really needed was the cold precision of a surgeon's hand. The hands of someone who isn't afraid to cut off a limb to save the body. Of course, if it could be fixed without cutting away a whole limb, you'd naturally prefer that. Who wouldn't? But seeing as you've come to the village quack, brace yourself.
So you fake a smile and reach over to shake his hands... but he instead grabs onto the baby out of your hands and slams it onto the table. You realize that you can't leave your baby here alone, so you sat down and started to question yourself, "Was it the best idea to bring your baby here? Would he even understand what he's seeing?" Your left foot begins tapping on the ground as you watch the village quack.
Taking out his blade of fountain pen, he starts making surgical incisions. The hands and feet that you were so proud of was sliced open, and you found it full of holes as it was dissected. The glue that held the meat to the bones? Collapsed easily under the pressure of the quack's constant barrage of questionings. All the hair you put onto the body were slashed all, all except a few at key vital locations. All the meat were skimmed off from places all over, from head to toe and no place was left untouched. Some parts were skimmed away, some were sewn back on to other locations, and others were completely amputated away. A few digits from the fingers were moved to the toe, fat from the butt cheeks to the chin. A new arm was pulled out of nowhere.
Okay, maybe that was a bit graphic. But point being, you need someone who is able to look at your work objectively and say, "This isn't necessary/why is this important" or "I don't understand the purpose of this action here".
One way of checking to see if you need to add in or delete info is to check to see if your sentences have a purpose: Now, there should be an action, and with every action, a reaction. If I recall correctly, they should be considered an action-reaction unit. Oh, I was wrong. It's motivation-reaction unit. Yeah, just google about it. There are plenty of articles about it. This second link is pretty good, talking about "Scenes" and "Sequels".
If you're finding that you have too many "motivation" units together, then you may want to delete some or add in some "reaction" units. Same with too many "reaction" units together.
Unnecessary info isn't needed, so feel free to remove them. If you feel, however, that they must be placed into the story, try doing so subtly. Like if the main character was of royalty or noble lines, then consistently hint about the MC's regal nature, how the MC always have his spine up straight, how MC has nice table manners, how MC can read (in other words, things that would set someone of "noble birth" apart from people like "slaves and merchants", etc). If it's during medieval time period, you can talk of how there's nobles and servants, house flags, kings and queens, knights and squires, etc. Just don't say, "Medieval time, 200 AD" or something (yeah, my dates are off).
I think I've strayed too far off the original point: freak out, rewrite everything, calm back down, remember that not everything has to change. Experiment with taking out information. Remember, we're trying to tease here. A tease with too much on isn't effective. A tease with everything off isn't much of a tease either. Find that middle ground. Experiment.
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(I took a quick look at the links you provided for me, it's quite something. Honestly I haven't heard of appositive before today. I'm very grateful for your help).
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looks like I have to review all the chaps I posted. Thanks 
