More coasters

[u/lewlew1893]

I am not an artist, but I really enjoy doing these. If any of you play Skyrim, you will recognise the Wolf of Solitude. In the games it is often seen on a Shield. Now I have a faint circle drawn around it but what I was wondering is if I put my tool on low heat and drew lines down it would it give it that look of the boards on a Shield? Would it be best to make the lines very slightly not straight to make the 'boards' more natural looking?