Hello, let me preface by saying that I love photography; I've been shooting for a few years but I am not a professional; however I volunteer at events and hope to improve my flash shooting. Clearly, the 'smoothness' and softness of light is lacking between both images. I shoot with Canon 5D Mark 3, and a 17-40 f4.0. A diffuser was also used over the flash. What steps can I take to soften the image and help it look more professional; both with regards to camera controls and post processing? Or can you direct me to some helpful resources online? Thank you in advance!