Venetian blind effect

[Krikor]

"Just figured something out".

Using ➤ Blur-Pixelize, might also be an option. 

I used the values as shown below.
Remembering to apply Alpha to the Background color!

"Move one of the layers to suit
Image -> Fit layers to canvas might be required"

I applied a mask just for clarification purposes that each image is on a different layer.