Ok, lets just say that i want to make a sprite, where would i make it because i don't know how to make a separate sprite-sheet, that is if you can make one.

Fill a space with blank color (background color), then make the sprites and save it.

start from where ever you feel comfortable, or ilike to start from the beginning and remove sprites I know I wont need and if its all original then just clear the whole thing

Just to clear this up, if i clear the entire sprite sheet, save it, and come back to this sprite sheet will all of the original sprites still be there? I'm just a little bit paranoid since this is going to be my first time attempting to make sprites.

ok, you clear it then save it. you now have a saved blank sprite sheet. but you can ALWAYS GET BACK TO THE ORIGINAL ONE! simply run acls and it should be reset

and load it to get it back

or not lol because the one you save is blank..