Girls, Im lonely enough to actually try dating for the first time, but I've got a major insecurity holding me back. How should I approach this?

I've never dated a woman in my life, and I'm 35. Every relationship I've had has been initiated by the woman. My last girlfriend left me 5 years ago, and after nearly going insane from loneliness I am desperate enough to try dating. The problem is that I'm horrifically insecure about my small dick, and thus I've never been able to hit or approach women. While my last girlfriend didn't care, and said I was great in bed, she was European and had much different values from most American women (this is what I see personally). It seems like in this culture having a small dick is something to be ashamed about, and the fear of being mocked or rejected has kept me from putting myself out there. I'm desperate enough to try now, but I don't know how I should approach it. Should I tell them up front? Wait until the pants come off? Should I just resign myself to using my hand for the rest of my life? Please tell me what to do because I have no idea and dating seems very daunting to me. Thanks
Girls, Im lonely enough to actually try dating for the first time, but I've got a major insecurity holding me back. How should I approach this?
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