It'd be a little easier to give a few suggestions if you state what you intend to use the toon for; solo, farming, pvp, teams/tfs, etc.
But a few suggestions from a quick glance. You're over the soft-cap for melee/range without mind link which is good. Your attacks however, i'm not sure exactly what chain you're shooting for. The awesome sustainable DPS widows can achieve is through follow up, while the burst DPS from crits out of hide is improved with the use of build up and placate. You skipped all of these powers.
You're ok on the defenses, need to spend some time working on your attack choices and slotting.
I like to team/itf's, i do solo but im not a big fan of it. im at work right now ill re-do the build and post it again when i get home. As for the attack chain im not really sure what im going to do yet ill give it a once over latter. For defense if you put it over the soft cap is it going to count towards anything, like is a 50% better than a 45%?
Anything over 45% doesn't make a difference. The benefit to being over the soft cap is when you come up against mobs that do defense debuffs. One shot from the average gun/sword will drop you 5.5% since widows have fairly low defense debuff resistance. If you have that much padding it'll increase your survivability quite a bit against those foes (ie cimerorans).
This is my first attempt at a NW build. I only mad it to 50 last night and was woundering if any of you could point me in the right direction