Can i sing better or does my voice suck?

Hey , I love music , and i love to sing , I sing screamo and metal no problem , My voice is beautiful when i do screamo or metal , Everyone is amazed of how good it sounds , But theres a default , I cannot sing worth scrap , I can sing but i just cannot seem to sound great, So i stick with screaming 24/7 , Is there a way i can sing better or learn? Maybe should i practice on singing more often ? Because i've been exhale screaming so long it doesnt hurt or anything i know i do that right , And my throat is never soar , So i know that's not why :P , So more practice?????