I have to agree with Tirediron's comments about the photographic and compositional technique these two pictures display. Assuming these are two of your better images, I would imagine that others are less successful than these two frames. I will pass along one tip for photographing smaller children: working at these distances with that lens at such wide f/stops is a recipe for many, many reject shots, as far as focus goes. These have the bare minimum of depth of field; closing down to f/3.5 and finding/setting up less-distracting backgrounds would be a smart strategy for avoiding shots that must be rejected due to slight focusing errors under real-world conditions.
Photographing smaller children of this age is, as you know, hard work! They move! They don't follow many directions! Focus and recompose at this range is **inaccurate as heck** if you are using the center AF square. At 7 to 10 feet at f/2 or so, the edges of the frame and the center of the frame are at different distances; distances which will exceed the DOF band of a lens shot at wide f/stops, and that's where/why a good number of missed focus shots can occur. At f/3.5 or at f/4, the overall net DOF at this camera-to-subject and subject-to-background range will be "similar", but there will be just enough additional DOF to make a keeper out of what would easily have been an f/2 but rejected image.
I dislike rendering opinions of peoples' skill level based on two, individual photos of related children who appear to maybe be the OP's own offspring. Two shots is not a lot to go on, but it can reveal a few things, but it's not the ideal way to evaluate a photographer. If we saw 100 of your photos, we could probably form better opinions, and spot trends, and patterns, and better evaluate the overall skill level you are currently at to a better degree than we can from seeing only these two shots.