Automation: Set due time as trigger to change card cover image, OR change custom sticker

[Julia Lords]

I am not a programmer by any stretch of the imagination.
After attempting to read through the comments on other similar questions, I have seen where HTTP API is recommended, but I have no earthly clue how to set the parameters to have the boards do what I am asking...

We use the cards as individual appointments. To make the boards easier to understand for our team members, we use cover images with the time of the appointment for that day.

Our appointment blocks are two hour blocks (8am-10am, 9am-11am, 10am-12pm, etc) with the beginning of that appointment window as the "due" time for the card, for that particular date.

I would like to be able to set the due time on a card and have that automatically change the cover image to a custom cover image from our templates, or have it add/change a custom sticker to the card.

Is there a way to do this?

I have attached a sample of a schedule for visual reference.

[milynnus]

@Julia Lords 

Tiny Powerup has an advanced cover capability. Where you can have the coloured labels with text. No sure these can be created from within a Trello automation. You have to test it out.

[Julia Lords]

Thank you,
I have their Advanced Cover Power-up, and love it.
Unfortunately, it is not compatible with the IOS Trello App, so on-the-go, I cannot use that power-up even without the automation option (I still use it though, I love their products).

[Julia Lords]

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