Maybe you could spread the characters a bit.
For example, Do the same with the kids by placing them in front of the parents with Anais in the middle of Gumball and Darwin. Do the same on Nicole's side with the father (didn't get Nicole's parent's names) in the middle while his wife is on his left and both are looking at Nicole happily. The Richard side is fine, but I can't see Frank Watterson's face. In fact, I can barely see all their faces.
Sorry if this is nitpicking, but my family had experience with a family photo (every year). And given that not only my mom but my aunt (who takes the photos) did this for a living.