Two points here; firstly, the criticism about the proportions is correct. Whether it's a stylistic choice is not, the size difference between the legs and the body is way too big even on your newer version. You should follow Helm's version - I think that's the best one. You should shrink the legs, enlarge the upper body or do both to make it fit better. You don't have to make it totally accurate but right now it's too much.
Secondly, Cure and Helm are excellent pixel artists, but I feel their and your edits lack punch. These summons appear in battle scenes, so you want a more aggressive or flamboyant pose. Instead of having one arm holding the other, have an arm outstretched and pointing, as if casting a spell downwards or even directly up in the air. I don't like the hands holding flowers look, it's far too tame.
I say stick to Helm's edit - his proportions are right - and just try and give it a little more adventure.