Well, it needs tidying up with a file, the herringbone at the bottom needs finishing, and then I need to decide if I round the edges to match the base, of leave it as is. However, all that aside, I think I've nailed the pattern I wanted to match. I know I'm missing the bottom row of decorated bricks, but the height differential in the base ought to make that less apparent. If needed I can always break the main wall section away from the base to add in a layer.
While not terribly obvious on this picture the blob of glue in the middle is where a pin emerges from the wall. I'll be explaining why that is at a later date.