The size of the penis cannot be increased by any way.
The size is anyway not important to satisfy your sexual partner. It's the art of foreplay which matters.
Next Steps
Relax and forget about increasing the size of your penis, unless you have a condition called as 'micro penis,' which is a rare condition.
Health Tips
Don't get mislead by various fraudulent advertisement in the internet.
Beware of quacks who could advantage of lack of awareness.