@BeAware
Hah!
There’s a really nifty web app that you can just plug images into and it will convert them to the proper size and pick the right blocks for the colors.
Then you can just convert that into a schematic to follow. I don’t think I could do map art without the schematics - as I am very fond of saying: I can’t count in minecraft 😅
{edit}
Oops! Hit post before pasting in the link!