Profile photo

Hi guys, I've been trying to get a photo of my Hippo to show as an avatar photo on my posts but for some reason it won't work, I've got the photo showing if I access my profile but it's not there on my posts, I assume it's because it's too large, but as I only use my iPhone and iPad to come on here I can't see how I can make the photo smaller, any ideas?

Sounds like you're confusing the profile picture with your avatar.
See my attached pic below:

Many thanks mate, been on forums long enough to have known that....senior moment lol