Lena Dunham is in full flower.

With two big Golden Globes wins under her tights, the overachiever behind HBO’s “Girls” has transitioned from gee-whiz indie upstart to a clear contender in TV and film.

“Girls” exec producer Judd Apatow saw her potential as soon as he watched her micro-budget “Tiny Furniture.” She needed help learning the mechanics of writing, producing and directing a show, but in terms of the vision needed to create compelling characters, “she had it,” said Apatow.

By all accounts, Dunham is a quick study. Onstage, when accepting her wins for “Girls,” she was emotional and even a little stunned. By the time she came backstage with the rest of the “Girls” gang, she was poised like a kudos veteran.

“I think when you get criticism, you have to be elegant about it,” Dunham said when asked about those who question her portrayal of twentysomething women in New York.

Dunham also was a natural at the art of saluting HBO, like so many before her.

“Working at HBO is an incredible gift,” she said. “I think it’s the only place we could make a show like this. Cable television was the only place where I could get a thing like this funded.”

And when asked about the progress of the book for which she landed a seven-figure deal last year, she cheerily observed: “I think my book’s coming well. My editor seems genuinely pleased and hopefully you won’t rip me a new one” when it’s released.