1. Pre-tinning of the first pad.
2. Aligning of the SOIC component.
3. Soldering to the pre-tinned pad.
4. Soldering to the pad across to lock the part in position.
5. Soldering of the rest of the pins.
https://www.youtube.com/watch?v=tiLn-gqoNxc
How to hand solder an SOIC SMD component
This video shows the process of SOIC SMT soldering.