From your picture, you pass really well.
As for plugs, Ive seen them mainly as a male thing (however I see alot of teens nowadays who seem to rock the plug/heavily pierced look alot, both male and female). But I think, when people arent heavily pierced, as this can then just become quite androgynous in my opinion, but instead have just a single plug or tunnel, it can look good. Im probably biased though, as I have a tunnel:p
Ive had mine at 5mm, since I was 16, and I wouldnt go bigger personally. I see some guys with bigger ones, that can look cool, but one of my mates had his at about 16mm, and now he doesnt wear it and his earlobe is saggy.