Sunflower Maiden

Up close this would not be a hidden image but at a distance this is a sunflower seed head with bright petals.

The maiden's face

Sunset On Kirche Katzen

In this case, the German language would have given you the hint. Translated the name is Sunset On Church Cats.

The cat on the left

The Church and the second cat.

The Lily Pond

This is one of the most difficult hidden images to find at this time in the collection.  The reason being is the title gives no clues.  Here the shape of a lily pad casts a shadow of a cat on the water. The cat's ear is formed by the shadow coming from a leaf that has a split in it

The Cat's shadow

Petals Of Cat Face Sun

Here the petals of the front sunflower combined with the petals of the sunflowers behind it form the face of a wild cat with his tongue out as if panting from a recent chase.

The outlined cat's face.