ArtMetal

First thing to do when you have questions about how the ArtMetal site works is to go to the Site Help/FAQ to see if the issue you are having has already been addressed. If it hasn't, then subscribe to the group and post the question there. That way, when someone else in the future has the same question, they will find the answer... maybe?

Here's what is already in the faq about your question:

Text and Image Editor

Working with photos, thumbnails, etc.

Images not showing in personal blog

I know that inserting an image is simple. But doing it may not be simple for everyone. My suggestion is to play with it. Start clicking and see where it takes you. I know you probably want a better explanation. The links above do explain it. But the thing I need to do is to make a training video showing how it's done. I have this in my to-do list and will do it as soon as I get a breather. It's important and it will be done. In the mean time, please try to follow the instructions provided in the links above.

Thanks!