How would you and how hard is it to paint metal?

I have this metal kitchen table set, and it’s white(painted)[i think unless there is white metal] metal, but I’d really like it to be black, how would I go about painting this. Would I just get some sandpaper and brush over the white and then a can of black spray paint and go to town? I’d like it to look nice…not like I got a crazy idea and ruined my kitchen table lol