Left Handed

Is there any give away clues here that Mia is left handed? Ignoring the top photo but looking at the bottom and the way she has written 'Summer'.

And is backwards writing (that reads perfectly in a mirror, by the way) a symptom of 'leftness' or is this just a 4 year olds learning curve in general?

2 parties and Fathers day this week-end means lots of cards to write. I can't tell you what she wrote in her daddy's card but it was extremely hilarious!! :)