It’s fan art and I’m more than certain Will Henry would be excited and love to see it. I suggest tagging him on Twitter (also known as X), the Wallace the Brave Instagram or Facebook page. Don’t worry about what the others are saying, they do not understand copyright law or how much creators love seeing people being excited about their work!
Fun fact: William Wallace didn’t wear a kilt. Kilts weren’t invented until the 16th century.Wallace inhabits post-16th century Scottish attire while Sterling inhabits ancient Scottish attire (they are known to have gone into battle naked up until at the least the 4th century).
The Cult of Sterling sounds like a dangerous group.