Some times when you are piecing a block you quite often end up with an awkward corner really too small for a motif treatment.. And Mary's block is a good example except that she has four such corners. I could put a little motif in each corner but that would not help the problem.
I have a bag of tricks for just this very thing...
1. I try to bring the patch into block by moving some of its color and adding something that makes the shape less defined. This time I chose flowers the same shade as the block and moved some down onto the purple along with some foliage.
2 For the upper right corner I chose something bold to attach to it to make it work as a larger unit.
3. Another option is bring some element from the block down into that patch and it just disappears..
4. Sometimes rather than make a small patch seem larger I divide and conquer to make it smaller... With two or more pieces of trim you can downsize a patch.
So now there is some variation in the four small corners which were so similar in size and they all have their own personality..