Oh boy, I REALLY hate to hear you're going for a DIY bedliner. Seriously, it's the "bottom of the barrel" as far as bedliners go. Even if you don't want LINE-X or another professional product, I would recommend other alternatives over a DIY bedliner. Such as, Bedrug, rubber mat, drop in.
From another forum:
Before pic.
After pic of Herculiner:
Two different DIY's that we stripped out:
