Hiya
I got as many signatures as possible for in-service training, case studies, audits, research and service development project. Also got lots of references of people I worked with on research project, audits and/or when taught to students, juniors and nurses. Always add to your credibility if someone can vouch for any work you have done.
As for the reflective statements, it is your perso opinion so not really necessary. Just need date, name, position and signature.
Hope this helps.
Bx