I'm a caucasian and I have a similar penis size as you do... I'm also not small but average.
To tell you the truth, in the 3 months of PE, I have seen minor results...About 1-1.5mm growth a month.
This is definitely not fast enough to intrigue a complete noobie. However, PE is not a surgery, it is a gym!
It takes time to grow, nothing is instant. Take my example, in a year, I'll be 1,5 cm larger which will move me to 17,5cm BPEL (measured with the ruler pressed against the pubic bone.) And 17,5cm cock is a nice and heavy peace of cock.
So basically, PE works but it is a dedication. If you're not patient enough and you want it "here and now", you're in for an injury.
Buddhist approach is needed in PE. You need to realize that even one tiny millimeter that you gained wasn't there before, and you earned it and you can enjoy it for the rest of your life.
I can't send you before/after pics because you won't see much difference, but the ruler doesn't lie. Check my signature...that's my progress measured every 2 weeks.
Cheers!
Sorry, the entire progress is
here!