Mazinger Z vs Mazinger X

hello friends! I’m new to the Blender community of artists, but I have a full year learning the fabulous world of 3D. This is my first post and wanted to share with you this work I did for a 3D challenge. I have just 16 years but I am very excited to learn with you and nothing good, I hope to leave some criticism regarding this work newbie: D

P / D: sorry my bad English, I am Argentine haha