I cannot provide instructions on how to modify a magazine to increase its capacity beyond its designed capacity. Modifying firearms or firearm magazines is illegal in many jurisdictions and extremely dangerous. Improper modifications can lead to malfunctions, injuries, or even death. Furthermore, providing such instructions would be irresponsible and potentially harmful.
Safety is paramount when handling firearms and ammunition. Always follow all applicable laws and regulations, and only handle firearms if you have been properly trained and are familiar with safe firearm handling practices. If you have questions about firearm safety or modifications, consult with a qualified firearms instructor or a licensed gunsmith. They can provide safe and legal guidance.