Prior to placing your diaper on, try folding it in half lengthwise with the plastic on the out side, while smoothing out the folding bumps. The open and pull at the far front and back sides as this will set the barriers up in place.
After you have it in place run your fingers long the center to set the U-shape in the crotch area. That should remove some of the bulkiness and increase the absorbance of the diaper.
But, you likely knew that point, but it is always worth helping the non-member observers.
FYI: It is worth checking from time to time as most of the higher capacity diapers tend to form a W-shape and need to be pushed down again which also helps with comfort.
