Attached is an Acanthus leaves engraving. The gold border is 24k wire that was rolled out slightly making it wider to begin with, annealed, and inlaid. Hammering in wire that does not fit the inlay well will work harden before it gets set in the undercut, and makes it harder to get it to set. The inlaid leaves in the center were sawn from gold sheet. The prepared pockets were undercut.. but up against the edge and the pearl is risky. To try to leave some material next to those edges, I angled the cut more and undercut at the bottom of the pocket so it leaves material at the top edge. A right angle inlay pocket next to these edges wouldn't have worked.
Old 1886 book designing resource; For learning to draw and design with Acanthus leaves there is a wonderful book from 1886 that google-books scanned. Information about it was posted in 2007 on the engraving forum. The book is called "Guide For Drawing the Acanthus". The drawing tutorials teach how to draw some of the most beautiful Acanthus leaves. I noticed a section toward the end titled Arabesque. It is interesting to read through that.
Here is a link to view the book on-line at google
The book can also be downloaded as pdf from the school server. www.Engravingschool.com/Drawing_Acanthus.pdf