I can't change my picture!

[MasterOfPuppets]

I can't change the little picture that comes up when I post! can someone help me? I'll give you a cookie!

[Ad Bot]

[PossesedAngel]

Its too huge.Resize it.

[EpIcGuY]

Yeah,must be small size.P.s its Avatar

[GenaralSkar]

[MasterOfPuppets]

it keeps saying 403 Forbidden you are forbidden to access / on this server

[MasterOfPuppets]

I GOT IT! (it needed to be a .gif file)