The images show a small Bird-dropping spider sitting patiently on a leaf waiting for passing prey. The rear view (fourth image) appears to be camouflaged with face-like features including two ears, eyes and a mouth. (See sightings 4386258 and 4367610 for similar examples). This type of spider usually sits with a slightly elevated front end posture and with its legs drawn up around its eyes leaving just enough space between the legs to peer through (fifth image). Thanks to Marcus for the initial sighting.