Hearthpwn

It may help focusing more on your mana curve during drafting. E.g. Pick an inferior card because the mana slot is better suited for the deck sometimes.

Also, see if you can approximate the general curves of the opponents and then pick yours accordingly (pick a curve which is slightly greedier - but not too much - than your average opponent). - if you are in a greedy meta, you can go the opposite way and pick a more rushy curve, but by a larger margin than if you're going greedier.