I hate when people put random crap as they're signatures.. Put something that relates to you. Like if your first and middle name: Haley Marie<3. Or if your playing a sport right now, put your last name and your sport number: Campbell #14.
I have a new iphone so i put candy apple, sometimes i put sweettart it kinda describes my personality, thats what i like, maybe sweet b***h or you wish or jealousy or bubble but if u have a but i like cutsey but sassy stuff, hey put that cutsey but sassy! Hope this helps just play off ur personality!