Really nice update!
Space below the “Collection Owner” module looks empty IMO . Maybe that empty space can be used for links (collection image with link) to more collections from same author?
The ‘Search collection’ part should be below the collection image, not the user card.
EDIT : Or even better – on the top-right side of the collection items, where the ‘Sort by’ is but on the right side. Anyway, it doesn’t look intuitive sitting next to the user card when there are so many better places for the search function.