you know, i was watching this show on vh1- sort of like the movie, School of Rock but not quite. it was gene simmons teaching a bunch of little classically-taught musicians how to play rocknroll. it was pretty funny (a bit corny tho)
but anyways what im trying to say here is when they did lead singer auditions gene picked the worst singer in the class simply cuz he had the most "rocknroll spirit"
same principle applies here. as long as you have fun and rock it, who cares.
but seeing your trying to sing slower, peacefullish songs like wish you were here and tears in heaven, i think you should go for some singing lessons. they do work.