Still working on ideas on this motif

I restarted the motif in my previous post and added another round to it.

Actually, not a full round; just repeated the centre motif. 

Now I am looking at ideas on how to fill the gaps between the motifs. It has to be a simple one because I don't have much of this thread left to play with.

p.s.  this post was uploaded using the Blogger apps on my mobile.