I have just started a Khajiit assasin/thief character.. i need some advice, The only perks i have taken so far is in sneak.. My perks:
Stealth 1/5
Muffled Movement
Backstab

What perks should i take next? My sneak is 31 and lockpicking only 24.. My one handed is 23
What should i train?
Also i need some advice on a armor set i should go with.. Now i have the shrouded armor..
I also only have a iron dagger ( I have stole a steel one 5 times but i keep getting caught pickpocketing)

Please help me! I'm sure it is some super assasin out there who can give me some advice

I have a Night Assasin named Rashir Nashdia, he's a dark elf. I called him a Night Assassin becaus he uses "magic" mostly just the powers like the shouts.

Anyhoo what I focused on:

-Stealth perks

-Light armor perks

-Bow 'n arrow -long range crowds of enemies

-Dual weild Daggers -close combat and close range backstab

-Speech -mostly for intimidation and better prices

-Lockpicking

-Some enchanting and smithing not to much and this is minor in his build.

If you want steal stuff get thieves guild armour. It increases pickpocketing chance by a bit and increases carrying capacity.

Bobjim has a good thread started with a detailed spec build that may help.
http://www.gamesas.com/topic/1366695-my-perfect-assassinthief-setup/

As a matter of fact it's on this page.

get the nightingale arour its good and the armour is resistant to frost , boots make you move quietly and the gloves increase one-handed and i think lockpicking

If you want a powerful sneak character it is a single rule of thumb: If you can take a sneak perk, take it. The perk tree is very powerful, and so it might take the enjoyment out of the game though.

I would go with the Shrudded Armor, The Thieves Guild Armor or Nightingale Armor. All are very beneficial to sneak characters.

Shadow warrior is an excellent perk. Great for getting out of trouble when your out numbered or losing a fight...just crouch down and roll away, then laugh as they search for you

I maxed out sneak and took all the perks on it, as they are pretty darn good for an Assassin.