Include all of your rolls in each post, and name them all to reflect what they are. For instance, if you are attacking you need to include the attack roll as well as the damage roll every time. If a roll is a critical threat, put the critical confirmation roll and any extra damage dice at the bottom of the post.
Examples:
[dice=Attack Roll]1d20+4[/dice]
[dice=Damage]1d8+3[/dice]
or
[dice=Power Attack]1d20+4-1[/dice]
[dice=Power Attack Damage]1d8+3+2[/dice]
To name a roll, you can either type it out in the same way the rolls above are or you can precede the rolls with OOC text that has the name of the roll.