I think you are on the right track, but perhaps you may value some of the ideas below.
In order to memorize a list like the one you showed, you could probably just use your own home as a memory palace. If speed is not of great importance (like for a memory competition) you can chunk multiple images close together. So for example three questions can be attached to the outside of your home as below.
If you want to make actual pictures of both the memory palace and the images (the memory palace method also works with just the images you have in your mind, like before the internet I already used this method) you might consider using png images (no background). So if you want to find png images you just go to Google images and type what you want an image of and also type png. If you click on the image with a white background and if you get a picture with squares you know it’s a png image and then you can just copy it and adjust the size if needed.
Another thing to consider is to just create memory palaces from pictures of big beautiful homes like Virtual Memory Palaces: sharing my 1,872 loci.