How to keep change collection page photo without affecting link icon on home page

[mekristinern]

 hi! I would like to know if it's possible to change the collection page photo without affecting the image on the collection icon on the home page. Example for the cereal, i want it to look like this on the home page :

 

While on the collection page, the photo will be like this:

I'm using debut theme. And here's my preview link:

https://aq2pqgfamwxqs2e0-52891713733.shopifypreview.com

Thank you!

[mekristinern]

Yes that's what i want it to look like. However i still can't figure it out