Animated GIF with flying kernels

Need to make an animated GIF for a website cover - so large size 3000px+ in high quality

On it ice cream kernels are floating slowly up - like in the gif attached only floating UP not down. So they are slowly separating from the mass and the whole mass might move up slowly too. Please DONT make separate kernels fly out randomly from BEHIND the main mass! It needs to look like a real falling effect. Feel free to add shadows to create a more "front and back" effect too.

The animation should be looped without any jerking. It can be a longer slow loop. But the file size should be optimized for web.

Kernels are in psd format, im attaching an image of the cover - how its supposed to look like without the motion effects right now

Im also attaching an image of kernels for colors - the last image is the colors we want the kernels on the main image to be. so more vivid

PLEASE ONLY APPLY IF YOU CAN MAKE THIS ANIMATION LOOK NICE AND NATURAL
we ve worked with designers before who made the kernels look like flying saucers :) lets respect each other's time