pit, you need to get some graph paper that's 1/8" or 1/10" and perhaps a french curve and mechanical pencils.
or skip the graph paper completely and get a drafting machine, or just a T square and some triangles and a drafting table, or just find a copy of Adobe Illustrator and do it all in the computer.
nice work and always interesting designs... but if you can improve your tools a little bit your drawings will look a little more finished.
just constructive criticism because i like your work, not intended to tear it down or imply there's anything wrong with it, simply pointing out ways to improve it.
for this widget, i'd suggest radiusing the top corners and adding a large 5/8" or so hole in the middle for a thumb gripper and to reduce the overall weight. if you make this thing from 1/4" stock it'd be heavy. perhaps ovalize the big hole a bit (to keep Spyderco from having kittens) and move the lanyard holes a bit closer to the centerline and closer to the top.
if you want it to be "trendy" it needs a bottle opener notch. for the people who can't open a bottle without an opener.