Plenty of people say upload, but you also have to be frequent and/or consistant. I posted something I'm really proud of (please check it out), but I never followed up on it so it doesn't really have any real weight.
Slow down there boy! I cant help but notice that you just joined PMC. I'm gonna give a shot of advice,
take is slow.
go piece by piece. for every thing you build, look back onto it and think about if you really like it or not. Keep building until it has IT. "It" can be whatever lines up to your idea of what you imagined. You have imagined something great, but huge. if you start small (this applies anywhere) and build yourself up, your experience will be much more fulfilling. I've done this and it has served me well.
I was afraid you'd say something with the word "WWII" in it. If only there was a mod or something to make it present day. Thanks for the suggestion though, very helpful. I'll try it out.