Hi, @Annelise (Le bois meslé)! Welcome! It's me for real this time. (My first post was automated.) What an interesting background! I have always wanted to be an archeologist, and I may indeed still try to pursue it one day. You may find me reaching out to learn more about that!
Regarding posting images privately here, there's no way to do that. But I do concur with @Manu, @pip and @Econlady . . . though it might seem intimidating to post, the group here is really supportive and comprised of all skill levels. One of the best ways to learn fast is to post stuff and ask others for tips on what to improve. Again, I know that takes courage to do publicly, but you can also reach out to people privately via our "private message" function (under your member avatar).
Also, read all the tutorials here. @Manu is one of our very amazing tutorialists (site contributors), and she is always willing to share.
Have fun, and don't hesitate to ask me questions at any time. I may take a while to respond, but I try to get to every message that I see. (Tagging helps alert me!)