Waving motion for watchface

Hi there,

I’m very new to the community and I have been mucking around with a couple of watchfaces. The one I currently need help with is an octopus watchface. I want to have a tentacle that moves in a semi circle to make it appear like it is waving. Currently the waving motion is back to front. I’ve tried inputting the pendulum code.

Below is a link to the watchface: superbec - My watchface - watch face for Apple Watch, Samsung Gear S3, Huawei Watch, and more - Facer

Please let me know what you think and if you have a any ideas.