the vines are lines of glue covered in parsley flakes
really nice man good job.
I really like the vines on the tower. Could you share what you used for it? As time consuming as it is, using card for shingles would add a lot for the roof.
If you lay a piece of paper on it, and cut it into a cone, you can use it as a template to make strips of shingles rather than individual ones. (strips of card, with flaps cut into one side, then you can overlap them)