This is the full uncropped art for book 1 of The Calling of Wrath:

[https://cdn.discordapp.com/attachments/1133418805872304198/1206404054440214579/cassandra.png?ex=65dbe254&is=65c96d54&hm=8bf6867bf55ca1ef59c2951fe28bde7683c20d447fd52fd20332a5d10243290f&=]

Then there's art of Nidhogg, the Ancestor and Protector of Midgard:

This narrative has been purloined without the author's approval. Report any appearances on Amazon.

[https://cdn.discordapp.com/attachments/1133418805872304198/1206404089983012955/Nidhogg.png?ex=65dbe25c&is=65c96d5c&hm=65fe0f4ebdabdf4b654e0a9a1431563fe6058f71fd440e344217a00d2c3cd393&=]

Lastly there's art for a later transformation of Cass:

[https://cdn.discordapp.com/attachments/1133418805872304198/1206404069225406564/Cassandra_in_Dragon_Form.png?ex=65dbe258&is=65c96d58&hm=9b28d4934bd5675b608dad3ba2c68df4daabb9542344cb28c50beed4542a97a5&=]