How to sculpt an octopus with patina out of a solid copper bar

Lili would like to share with you how she has constructed an abstract sculpture 20mm wide round copper bar found in a scrap yard as well as a copper sheet. She will show in details her experimentation with Ammonia to create a wonderful patina.
If you are in UK and want to learn how to weld and work with metal, here is the website of Natalie Bradwell, the official Iron Lady:
www.bradwellblacksmiths.com/