The blinking will work on a side image as it does for a regular sprite. You might need to play around with a LayeredImageProxy Transform to crop/zoom your side image so it's positioned where you want.

Thanks for your kind words!

I'm not quite sure I know what you're looking for - you can use the layered image visualizer (or the regular image attributes tool) in combination with Easy Blinking to see the eye layers like normal. I have examples included with the files, and also on my website here: https://feniksdev.com/tool/easyblink-examples/

Is there something in particular you're having trouble with?