Welcome to nostr. I am new here as well.

From what I figured so far there are many clients with varying levels of functionality / completeness state. I am using Amethyst on my Android which works fine but not able to find way how to set profile picture.

My main desktop (Windows) client is gossip which also does not implement profile picture uploads.

I found that Iris (for Windows) allows me to set my profile picture so I have set the pic from there and it synchronized across the networks so both Amethyst and gossip now show it properly!

Its bit clunky but between the three clients I think I have all the functionality I need.

Cheers.