For today's word I looked at a few Photoshop tutorials and had a little play.
The original photo was Yelena's corrosion experiment in April. If you look well you can see a few nails and at the right bottom a paperclip. Here is the original photo: http://365project.org/ingrid01/365/2020-04-06 and this is the link to the tutorial that worked best for me today: https://www.youtube.com/watch?v=6bsaQXOCD1I
@ingrid01 Thank you Babs. The link is there for anyone who wants to give it a go, but also for myself. In a couple of months I know that I did this, but won't have a clue how ;)