I have many observations about the legends, but they probably are just render issues.
With that said, take special care of the Alt Gr keycaps, which are not present in the render (and GMK is perfectly capable of forgetting them if not told explicitly to do ’em).
Also, make it explicit in this IC you’re going with the es-ES («Spanish (Spain)») layout and not es-LA («Spanish (Latin America)») or, for that matter, ib-ES («Iberoamerican Spanish») or es-ES-pr («Spanish for Programmers»).
Okay, I’ll say it: "Súper" with the accent. There.