Very creative and thanks for sharing the blood recipe. I'm sure it will come in handy! I love how the frame within a frame works and is highlighted by the contrasting tones. Big fav.
So challenge time... how about shooting a form within a form (if you are not a vegetarian & ok with 'meat pictures' the work of Per Johansen will give you an idea of what is possible). If that does not suit how about shooting the topic 'submerged' any interpretation will do. Have fun.