Makeup techniques

So I recently bought maybellines dresm pure bb cream in medium and the fit me concealer in light. 
I also bought the RMCA no color powder (the Laura mercier loose powder knockoff) and a bronzer from Milani.
So I tried applying the bb cream all over and then the concealer under my eyes, forehead nose and chin 
And then applied powder and bronzer
And my face came off as white and it looked like too much so now I'm thinking of applying concealer first and then be cream but my question is that if I do so will have to apply powder on top of my concealer directly or first concealer then bb and then powder