After carefully scrubbing all of the paper fibers off of the gel, give it one final rinse in fresh water to remove all paper residue and allow to dry.
I usually place the gel images on either glass or plastic. Paper fibers have a tendency to stick. And as long as the gel hasn't dissolved/melted, there shouldn't be any issues with the gel sticking to glass or plastic.
Note that it's normal for the gel to still appear milky, and won't completely clear until dry.