Hi Angus
Thank you for submitting these They are clean and I like the creativity. I kind of like where you are headed but I am not a big fan of any of the handwriting styles. I like the DM that you did though. If you can do handwriting more like my top rankings with the DM and instead of a circle between the D and M make it the cross section of a camera aperture that would be cool.
here is an example of what I mean
http://www.google.com/imgres?imgurl=http://www.elysia.nl/sites/default/files/embedded_images/aperture_science.png&imgrefurl=http://www.elysia.nl/nl/content/deel-1-kleren-maken-de-man-de-basis-van-de-onderwaterfotografie&h=1600&w=1600&sz=37&tbnid=qmZ5ZxOqERbQvM:&tbnh=89&tbnw=89&zoom=1&usg=__v3CHiK00IHzrJ1sBRFfxG_52Ptg=&docid=vHBmAqoVHtlvvM&sa=X&ei=SaoLUqrqGMTCywHe6ICgCg&ved=0CDQQ9QEwAA&dur=217