When in doubt while playing flustered little introverts go for the classics.<br/><br/>Drop food on the floor/on yourself. Topple over a glass of liquid (bonus points for milk on the breasts). Have the character embarrass themselves trying to be suave in a conversation. Have the character be way too happy than they should be because they are eating with a friend instead of alone now.<br/><br/>For Miyako I wholly recommend some clumsy accident :-)