Here, I'll post all of the related media (like earlier covers or related fanart).

First (lame) cover made by me:

Then another one that I made (also weird), which also has another variant with my username in white:

The most awesomesauce cover made by StelAndSel (thank you for that!), with both purple and green fonts because they're both awesome:

The very first (cluttered) cover I made back when I first named this 'Castle of Glass':

A cute af Scevin pic!

Random pics of the ships sailing in this story:

And, ofc, some of our beloved Ptx!