With regards to profile and building a relationship with SAs, here's the following run down I've learnt so far working with my SA.
1. Build multiple profiles, I have 3, my mum, my husband and myself and queue for QB once each profile hits prespend, I do not track my prespend these days, my SA would offer and ask once its time.
2. Build a connection with your SA, chit chat, be friendly, and have a good laugh together! Be comfortable shopping. It goes a long way! Once, I saw something online and asked my SA if its available without measuring the size, head down just to realize that it is too big for my desk and had to reject the item. But it didn't affect our relationship, because I was offered a bag the next visit!
3. Frequency, it is always nice to drop by frequently so that your SA would remember you, I do it once every 1-2 months. Even buying something small like twilly, make up etc. Would also be fine! If there's nothing that catches your eye, feel free to way away empty handed and not be forced into buying anything.
4. Be transparent and specific. List down your preferred styles and colours early into your journey, so that your SA could keep a look out for you. Even for non QB stuff, you never know when you'll get a surprise!
Fun story:
I once wanted to buy a limited embroidered scarf, only 1 piece in sg, my SA actually told me not to buy it because it is super hard to maintain unless it is for a display. I reckon our relationship is pretty good for something that most people would see as a transactional relationship!
Hope this helps!
so that is where all the stocks go to 
i dun dare to step in chit chat with sa liao hahahaha dun waste SA time
