Marking ^.^
As to how to write a good death, I would recommend looking at some of your favorites-- mine would be, say, the death of Hal 9000 in 2001-- and seeing what makes it so meaningful. A lot of my favorites are made dramatic by the reaction of other characters to the death. Think about how your characters would deal with the death: often, there's shock, fear, disbelief, denial, rage, misery, numbness, or some combination thereof in the initial reaction, followed by the beginnings of the five stages of grief (which I'd recommend looking up).