Making own tarp

[TrailSlug]

Guys,
I want to try making my own tarp but I need to know approximately where to put my pull outs for my Warbonnet Ridgerunner. It's a 12 ft long ~10 ft wide tarp. Can any of you guys that have already done this tell me where I need to put the pull outs?

Thanks in advance.

[happydensity]

Looking at the WB Cloudburst tarp, the pullouts appear to be about halfway down each side, rather than a little higher, like typical tarps. The spread I used, per RR length measurement, was about 78" apart