Steps 4-6: Sets and Bars

STEP 4 -- Pick Your Defensive / Sustain Set

Pick one set that keeps you alive and functioning. Put 3 pieces of it on your body/jewelry slots.

Survivability
Sustain
"I can keep fighting" power

STEP 5 -- Pick Your Offensive Set

Pick one set that increases kill pressure. Put 3 pieces of it in your remaining slots.

Damage
Burst
Pressure
"I can actually win fights" power

STEP 6 -- Build Your Bars Properly

This is the part most new PvPers mess up.

Front Bar (Primary Damage Bar)

Finish your offensive 5-piece set on the front bar.

Your main damage skills
Your burst combo
Your execute (if you have one)

Back Bar (Defense / Sustain Bar)

Finish your defensive 5-piece set on the back bar.

Heals
Buffs
Shields / protection
Escape tools / mobility
Cleanses (if available)