there’s no comic book format that’s universally agreed upon. all you need to do is be able to write in a way your collaborators – your artist, a colorist, a letterer, an editor, whomever – can know what the hell you’re talking about. there’s a zillion samples by a zillion people out there.
for my money, the right way is the one that takes the least amount of typing. your format isn’t the important part.