Unfortunately, no matter which digital app, you can only start with what you have. And your pic clearly shows that the shutter time was too slow, so the subject's movement have not been frozen, and you yourself couldn't hold the camera still, which is worse.
What you can do is go to a higher iso value, or see that you have a camera with a larger aperture. I haven't got any experience with digital camera's, but the principles stay the same.
Best is to shoot with max aperture, (1,8 or even larger, ie 1,4) and a sensitivity of some 800 or more ISO. On traditional camera's this causes more grain as often an ISO400 is shot at 1600 and the developing has to be adapted, but the result is ok.
I would not know how to even start doing anything whatsoever with this pic but to delete it. Sorry.