My first attempt failed today trying to make marshmallow fondant. It's about 85% humid here in TX today. Will that affect it? I followed the directions to a T but in the end it was very dry, then sticky, then I was trying to compensate with some water, then I think perhaps I used too much crisco since it kept sticking to the counter and then it was a just greaseball, haha. I just need it for 2D cutouts for the side of my son's cake this weekend and wanted to make and color it today to let it set up and color it in advance. I'm doing an owl theme and just need a few cute things and I plan to buttercreme a 3 layer cake , then use a chocolate ganash over it for the shine. Any more issues I can forsee? Thanks so much!

Yes humidity does effect the marshmallow fondant. Sadly any added moisture in the air will cause it to stay sticky and tackey. you need to either make sure everything is sealed up and run a dehumidifer in the room or wait for it to be less humid out