I think Nine is under-appreciated. He is dark and damaged, but also funny, and he loves Rose. He may be short with her, but he loves her. I think this quote is a great fit for all doctors, and so many companions. He says it to Rose, though, and I think roses are the best image for it. I've made the TARDIS dark, because I think that fits Nine, but you could easily change it to a more traditional blue.
This is a large pattern, but only requires basic cross-stitch skills.