Take a butterfly's picture next.

 yellow portrait photo effect in adobe Photoshop cs2

Insert it on a new layer by erasing the background with Polygonal Lasso Tool. Copy the layer (ctrl+j) and correct the butterfly's size, its placement and distort level, applying Free Transform (ctrl+t) and Distort.

 yellow portrait photo effect in adobe Photoshop cs2

Correct the color (ctrl+m).

 yellow portrait photo effect in adobe Photoshop cs2

Then copy many times the big butterfly's layer (ctrl+j). Change the size and the placement's angle of the copies - butterflies (ctrl+t). Fill one of the corners with them and after that all the layers containing the butterflies must be merged down.

 yellow portrait photo effect in adobe Photoshop cs2

Change the layer's type on Soft Light and minimize the layer's Opacity till 20%.
  


 yellow portrait photo effect in adobe Photoshop cs2

Cut out now a lady bird from another picture.

 yellow portrait photo effect in adobe Photoshop cs2

And place it on one of the flower's petal.

 yellow portrait photo effect in adobe Photoshop cs2

Add its shadow the same way we did with the flower's shadow.

 yellow portrait photo effect in adobe Photoshop cs2

Combine now all the layers (shift+ctrl+u) and copy the last one (ctrl+j). Blur it out with Gaussian Blur and change the new layer's type on Color Burn. Minimize the Opacity till 25%.

 yellow portrait photo effect in adobe Photoshop cs2 

Finished!

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