Represent another pattern’s part:



Another pattern’s part:



Represent the same way the remained pattern’s part.



Keep connected now only those layers that form the bird’s silhouette. Combine them (Ctrl + Shift + E) and we’ll get:



Apply the indicated parameters below
Blending Options-Gradient Overlay



Gradient’s parameters



We’ll get:



Connect the layer that has a dark background, highlighted in the center. Place the bird’s silhouette above this layer.



The final result!