please help i may have screwed up

it will eventually harden, depending on how much hardner you used.  What ratio were you mixing it at? should only be about 1-2% by volume. Always remember to MIX thoroughly, getting the bottom and sides mixed in. If you use a lower ratio like 1% then you should have about 15mins to do your layup. Also, resin cures ALOT faster when its in a cup, if its on a board or spread out over a larger surface are it won't harden as quickly

Don't add more hardner or anything to it either, you may try using a heatgun and lightly go over it with lots of patience to speed up the exotherm. Try this first

You could also, IF THE LAYER UNDER IT is slightly tacky, add your next layer on top of it and that will cure the layer below. This isn't really recomended though, as you may have delamination as it cures.

good luck

I have done quite a few things with fiberglass resin, they ask you to measure the resin and then add so many drops of hardener, I have guessed each time just trying different amounts, I have done to much to where it seemed like it was going to burst into flames, but I have had the best luck just adding a small amount, and letting it sit out in the sun. If it stays gooey and does not sit in the sun at all, it will stay gooey. I do always mix it in the same size container so that I know about how much to use but I do not think that this stuff will ever turn out the same as last time whether you measure it or not, I just do not think that the resin stays consistent, but I also do not think that it matters if it does.

Matt