I just happen to come across this post and realized this is my bow. I'd be happy to tell you how I did it
I use the NBNG templates for the majority of my twisted boutique bows. The bottom bow for this is made with 7/8" wide ribbon using 27" of ribbon to make a twisted boutique bow. (Then on this style I used spikes but I see you didn't want those) then the top bow I made another twisted boutique hair bow using 24" of 7/8" wide ribbon. I do have a bow just like this one listed in my Etsy shop that doesn't have the spikes if you would like to see what it looks like. Same bow, same size ribbons, same method just minus the spikes. These bows are huge sellers, good luck!
Hope this helps!