should I feel guilty or ashamed if I don't smile for my facebook profile picture?

[The Sword Of Sherwood Forestâ˜]

im 36 and have recently changed my facebook profile picture? previously the picture was of a beautiful fox, now its just a picture of me that I took from my phone........but im not smiling, its a neutral expression.

im a good person....and I feel slightly guilty about doing that? my mum whom im very close to, who I love very much phoned me today and commented about me changing my profile picture.......she just said '' you've changed your picture haven't you ? ''

she didn't say I like it or anything, just commented that id changed it, my dad left a comment on the picture and my aunt did too......but I haven't logged in or seen the comments yet........my mum commented on the photo to.

she said on the phone, ' your lay on your bed aren't you ?' I said yes I took it whilst laying on my bed.

anyway, I just feel like ive done something wrong by uploading the photo? the fact that im not smiling?