I used a sprite sheet cutter on original image to make pictures for alternate mimic.
Also resized them for enemies/ sv_enemies use.
With this set you will get mimic of 12 variations with opened and closed.
enemies folder are closed and sv_enemies are opened.
enemies dimensions are similar to the size of original mimic.
pictures are in original resolution that contains both versions.
Event sample is included as an image, show picture dissolve as animation.