How do I tell my good friend her selfie is not flattering ?

Offer to take her photo. See if she likes yours better

you dont because your taste is not everyones

She likely knows she has a big nose. She is taking selfies [i]anyway[/i] and is apparently more ok with herself than you are.

You say nothing if you wish to keep her friendship.

You can just say that. The angle is unflattering. I say that even to my gf and nothing bad happens. Just be honest and if she's a normal sensible person she'll see you are protecting her image, if not then screw it let her selfie away. :)

[c=#7700B2]speaking as a girl with a bit of a largish nose, I would say keep your thoughts to yourself on this one lol[/c]

Don't - it's a quick way to lose a friend

Be blunt. Lols

I just tell 'em "Your pic is blurry and out of focus", and they'll be like "How dare you, I was born like this!!"

Maybe it's your eyes, they are all wonky and a bit of an 'issue'