I finally realised Vinted members search by #hashtags and their inclusion on my wardrobe items has been dramatic. I went through every item and added #hashtags such as #pearlnecklace, #costumejewellery and #accuristwatch and immediately sold 6 items overnight, gained a follower and numerous items have been favourited.
They appear to be the single most important factor I have discovered in making your items more visible to other members in vinted search results. Pure voodoo. I have updated my Vinted Top Tips to reflect my experiences.
Take a look at Web Confection on Vinted.