The original picture. Cute, but a bit boring and the people in the background are somewhat distracting. I wanted to punch up the colors a bit and put the focus on the two boys.
I brought the picture into Tilt Shift Generator and used the new oval blur tool tilted at 51%. The saturation is 75%, the brightness is 34% and the contrast is 63%. I also added a vignette at 64%.
In Camera+ I cropped the image to square and added a thin white border. Much better.