Colour placement

Hi again guys, i bought more dye so im back!!
At the moment i have a full head of flamingo pink, which on first application looks ace but i find it fades sooooo much faster than crazy colour on my hair (i think i am the ONLY person this applies to!) i co wash once a week-10 days so its not a major problem, im just lazy and can't be bothered to keep touching up!
In stock i have cyclamen x2, pinkissimo hot purple and hoping to grab some blue, maybe capri blue?
Basically i have seen a pic on fb, its a girl with these sort of colours and i REALLY like it, it seems to be random streaks of colour over a pink base, but the thing is its all pastel. Now i really like pastels on other people but not so sure on myself ( i look ridiculous blonde) So i was hoping someone could advise if the colours i have would go together alright and where i could put them. Ideally i would like to keep pink around my face as i love the pink!! Also would mixing the cyclamen, pinkissimo and some condish give me a nice bright pink a bit likghter than the straight cyclamen? Sorry for rambling but this will be my first time with multiple brights and I'm scared!!!