It’s important to show good etiquette when making du’a in order to please Allah (SWT).Begin with praising Allah and send salutations to the Prophet Muhammad (PBUH).
“When any one of you have performed salah (prayer) and wants to supplicate, let him begin with praising His Lord (swt) and glorifying Him, then send prayers upon the Prophet Muhammad (PBUH). Then he may supplicate for whatever he wishes” [Tirmidhi]
Turn to Allah and supplicate with sincerity and humility, with the inner feeling of being His slave. Call out to Allah Almighty by His beautiful names and try and apply the name of Allah that is most befitting to what you are asking for.