The original ribbon have fray a lot.If I had cut it , it would not have been possible to have the same length and style.I buy a new one from a very close color.I know from a value point , keeping the original stuff is always the best but I didn't buy it for that reason.The new ribbon is only fix in the front with a few stitches.
I wash the jewel with water and soap.My honey point me that I should use alcohol but the result is still good and no harm was done.I stitch it at the top and the bottom exactly like it was .There's no hole or pin so I have to do it the same way.
In the future I may used a spray to protect it like the one you used for suede shoes.I think it might help to stop the dust to enter in the wool and repeal water just in case of.
What I would do differently ? I would say nothing for now.I'm not an expert , I never restore an antique hat before.It take time but it feel rewarding and satisfactory to bring something back to life.If you know someone more expert then me or have advice for next time, I would love to hear it because I hope I will do it again .If I have to give advice from this experience I would say follow your instinct first and do logical choice.