Symbolism is like adding a little spice to your writing or art - it gives deeper meaning to things by representing something else. It's like a secret code that only the cool kids understand, adding layers of complexity to your work. So next time you see a red rose in a poem, it's not just a flower - it's probably symbolizing love or passion.
This question caught my attention- I found this site which may help you on your journey for an answer to this. http://moroccandesign.com/eight-point-star Being that your boyfriend is of Irish decent- he may have learned more towards it meaning the 4 corners and the equinox and solstices; as that has a Celtic symobolism in it. Celtics, Pagans, and the Druid priests respected life and nature- in all aspects. Hopefully this is the meaning he has chosen for this tattoo. :) Best wishes on the journey for your answer. ~EmJay
Imagery is basically a description, so I'd say any part that Katniss Everdeen is describing something would be okay. I'm sorry to say, I don't have of the books memorized line for line exactly, but maybe you could find a part in one of the books such as, maybe Katniss describing the Hunger Games opening ceremony (especially the scenes involving her extravagant dresses) or her description of the Hunger Games arena. If you have read the second book, the imagery of the clock-shaped arena was something I especially remembered, when she realized what it was and symbolized.