As always I think the costume and the cosplayer are flawless , you look exactly as William would look in real life, it really suits you, the pose its quite interesting and the expression in your face is perfect
the only thing I guess you missed but mm isnt a big thing, at first I didnt notice , the part of the ears looks a bit pixelated I guess because of the editing, but its a great photo , the background also is very nice it gives a calm atmosphere because the colors and the little blur
Ok.. I am honestly not an expert on the well rounded critique thing, but I'll try.
I think that from the entire shoot, this is my favorite one. The effect of that new lens you talked about gives it a true Wonderland feeling and I'm a fierce believer that nothing about this picture is not well thought through; the details, the location, the expression and the angle. It's all perfection.
Not sure if it'll do you any good, but I can't find anything lacking here. (Hence the 5 out of 5 on all 4's. It is sublime, nothing more or less.)