Competitive Procedure with Negotiation....

So here I am about to start my first competitive procedure with negotiation following the updated Public Procurement regulations. I have read and re-read the guidance documentation, but I am nervous about pressing the submit button! I think my nervousness is down to the lack of exposure I have with the process and this is the first time I have reached out to my peers for thoughts and guidance and received no responses. I cannot be the first to use this process, maybe I am within my network or maybe my network is just too small :) Anyway, a first for CPwN and now a first for posting on Procurious reaching out for some feedback. Is there anybody on here who has tried Competitive Procedure with Negotiation using the new regulations? If there is, do you have any feedback you are willing to share?