Please note: Carrying out a Mustahab (preferable) act brings sawaab or reward but no sin if left out.

There are 5 Mustahab acts in Wudhu:

1. To begin from the right.
2. To make Masah of the nape.
3. Not to take assistance from anyone.
4. To face the Qibla
5. To sit on a high and clean place