Pearson 26 Ariel cushions/pattern?

[skyebean]

I am looking into making my own cushions for our sailboat, and I'm wondering about how I should go about it. I was thinking of just making a template, but wondering if there was a pattern out there somewhere....

These are for the interior... I've picked out some really fun outdoor fabric for them, but not specifically marine. Will this do?

Thanks!
Skye