Hi @RQ30 ,
There are a couple of ways to do it-
1. Can you check in the content tree whether your content is getting saved or not?
2. If not, then please try to check the sightly code and name of the image field. also, getter of sling models.
3. Check in DOM elements, if the image URL is getting rendered there.
4. If you are checking on publish, then make sure the image the published as well.