Jesus Christ gave a basic outline of how to pray (Matthew 6:9-13):
Our Father which art in heaven, Hallowed by thy name
Jesus Christ instructed that we pray to the Father (Matthew 6:6), in his (Christ's) name, as Jesus himself will grant what we ask of the Father (John 14:6, 13-14). This is because he is the mediator between God and men (1 Timothy 2:5).
We are not to pray for harm towards others or for selfish gain. All prayers must have a good motive behind them. (James 4:3).
We are not limited as to how often we should pray. (1 Thessalonians 5:17, Matthew 26:41, Acts 10:2, Ephesians 6:18)
We are not to pray in a showy, boastful way; prayers must be modest and humble. (Matthew 6:5, Luke 18:9-14).
It is proper to pray for others' well-being (James 5:13-16).
Do not pray excessively repetitive prayers (Matthew 6:7).
You must believe in the power of your prayers in order for them to be heard (Matthew 21:22, Mark 11:24).
Don't waver in your request. Be sure of what you are asking (James 1:6-8).
In a nutshell, prayer should be directed to the Father thorugh the name of Jesus Christ as our mediator. Prayer should be spoken with a motive towards the love and wellbeing of others, one's actual needs (instead of greedy desires), and with humility. Pray for those who are sick, or poor, or injured. Pray for those who need comforting, or spiritual strength. Pray for help when you are in need, when you are scared, when you are at a crossroads in life. Pray for your faith to be strengthened, pray for direction when tackling tough decisions. Pray for protection and help when danger threatens. Pray for wisdom and knowledge. Pray to resist temptations . Pray for forgiveness when you sin . Pray for your enemies. Pray for children . Pray for help in your Christian labor. Pray for one another: