Small medieval stone castle for Min...

Small medieval stone castle for Minecraft, built on a hill. Square layout with 4 corner towers and a central keep. Use only 3–4 block types: stone bricks, cobblestone, spruce wood, and slabs. Thick defensive walls, simple gate entrance, small courtyard inside. Keep design compact, realistic, and functional rather than decorative. Must look good from far away and still detailed up close. make it 30 by 30 blocks