Example:

https://www.ipernity.com/doc/knut/9777651

1. click on the symbol "view all sizes" over your picture
2. copy the complete html-code under the picture
3. go back to your picture
4. click on the symbol "add a note" over the picture
5. paste/insert the copied html-code into the note
6. click on "SAVE"

Tips:
-You can resize and move a note
-on ipernitys mainpage you can choose the english-version of ipernity