Perfect Prayer

Prayer (salaat, plural: salaah) is one of the five pillars of Islam.
It is incumbent upon all Muslims, including children aged ten and over, to complete their five daily prayers according to the method described here in order for them to be valid. It is believed that communication with Allah will bring life to the prayerful and bring them courage. Muslims believe that Allah speaks to us through the Quran, and salaah is our means of responding. Whether you're just curious as to how Muslims pray or if you're looking to learn for yourself.

Face the Qibla. This is the direction all Muslims face to turn in prayer toward Kabah.
The Holy Mosque in Mecca is the most revered place of worship for Muslims around the entire world. At the center of the mosque is the Ka'ba. All Muslims are required to face the Ka'ba five times every day when offering their prayers.

Pray at the proper time. The five prayers of each day take place at very specific times. For each one, there is a brief period of time it can be performed, determined by the rising and falling of the sun. Each salah takes about 5 to 10 minutes from start to finish, but should never be hurried.
The five prayers are Fajr, Zuhr, Asr, Maghrib and Isha. They are at dawn, immediately after noon, in the mid-afternoon, at sunset, and at night, respectively. They are not at the same time each day as they are timed by the sun, which changes path throughout the seasons.

Make your intention known in your heart. Before initiating the salat, it is important that your intention be known and understood. Not necessarily aloud, but from within.
You may think about how many rakats you are going to do and for what purpose. Whatever it is, be sure you mean it.

Don't disturb others if they are praying.
Don't talk during your salah and always maintain focus.
Never talk loudly in a Mosque; this might disturb others in prayer.
Always pray 5 time a day even when you are in school.
For Shia followers there's not much difference is saying the prayer; just in 3rd part of method two instead of placing your hands over each other place them at side of your body besides your hips, just like normal standing.
Always try to use your time in the mosque efficiently i.e read Qu'ran or make Thikr.(remembrance of Allah)
Do not be intoxicated on alcohol (which is haram/forbidden) or medication during your salah.
Plan your daily life around the five salaat, not the other way round
Don't stand in front of someone who is praying
Make sure your body and cloth are clean and smells good before going to mosque or practicing salat.

God is the most forgiving, so ask God for forgiveness or pray that prayer again.