There are several rules that professionals out there live by, although I don't abide by all the rules, here are those that I deem to be more important for myself.
#1: ALWAYS HAVE THESE 3 BASIC STEPS - CLEANSE / TONE / MOISTURISE BEFORE YOUR MAKE-UP REGIME.
After cleansing, I would tone my face with my SK-II Facial Treatment Clear Lotion, after which, I would slap on my moisturiser - SK-II skin signature melting rich cream. I would wait about 5 mins for the moisturiser to "settle" in.
#2: ALWAYS ALWAYS ALWAYS APPLY YOUR SUN BLOCK or SUN SCREEN LOTIONS.
After moisturising, I would apply tons of sunscreen or sun block lotions. My fave under my make-up is Clarins UV Plus HP Day Screen SPF 40. However, I also have the Biore UV perfect face milk. I would use the Biore sunblock for days that I do not apply make-up. Sun block / sun screen helps us to prevent sun damage and acts as a skin brighter to achieve a brighter, more luminous glow.
#3: IF YOU USE A LIQUID FOUNDATION / BB CREAM, ALWAYS USE A STIPPLING BRUSH!!!!
After sun block or sun screen, I would apply a primer. After primer, I would squeeze a small amount of BB cream / liquid foundation on my hand and use my MAC #187 duo fibre stippling brush to apply the liquids to my face. A stippling brush helps you to achieve an air-brushed look on your skin.
#4: ALWAYS APPLY LOOSE POWDER ON TOP OF YOUR LIQUID FOUNDATION / BB CREAM!!!
I LOVE LOVE Make up forever's HD microfinish loose powder in translucent. It keeps my skin matt, non-shiny all day long!!! I have combination skin and my T-zone areas would become oily. But after using this loose powder, my make up stays on and needs no fixing + my skin is matt all day till I go home and start removing it. Loose powder is very important to help you set your liquid foundation / bb cream and prevent it from smudging easily.
#5: AFTER YOUR ENTIRE MAKE-UP ROUTINE, STRAY ON A FIXER.
I don't like carrying a make-up pouch in my bag, the only touch-up I need usually is a lip gloss / lipstick. I seriously think its so troublesome to bring your 2 way cake / eyebrow pencil / mascara / blusher blah blah blah etc etc out with you. Touching up in random toilets sucks balls as well. Therefore, after my make-up, I would spray my entire face with a make-up fixer. I am using Make up Forever mist and fix, it keeps my make-up intact even if I walk in the rain!!!! =D
Tell me your make-up commandments too!!! I would love to hear how you girls do it! =)))