Yes and no, yes because you come accross as demanding and no because you come accross as strong minded. But it depends if you know they like u. If you have any doubt that they don't like you hell no don't do it. It is definately not wrong but don't do it all the time cause you might seem desperate
OF COURSE NOT! if a guy can ask a girl out, I dont see why a girl cant ask a guy out! (: sometimes guys can be shy, so you might wanna ask them out, instead of waiting fer them to ask you out dont worry, you wont sound desperate if you ask a guy out!