Make sure there is volume at the top with a touch of backcombing, otherwise it will end up looking flat and limp, so do some gentle backcombing if necessary.
Step 1: Slightly backcomb the roots of the hair from behind the fringe to where the head starts to round (keep going down the back of the head if you like to create an exaggerated "bump"), and comb lightly over the top to cover the backcombing.