After the bouncy castle

Details:
Quarter-Plate Daguerreotype
Iodine: yellow with red-edges
Bromine: red with slight yellow interior
Exposure: 20 seconds @ f2.8 (skin: 11.33ev)
Lighting: afternoon shade, north light
Development: 3:15 @ 176˚F

3:15 over mercury at 176˚F pushed the developing over the edge, as can been seen by all the weird little splots. Underexposed too?