Yes, iron parallel to the edge, make a nice round edge with the foam melted a bit. Don’t use the best clothes iron, the paper leaves residue on it, buy a cheap one just for foam. I have found that to work very well on the FT foam, slightly less well on our heavy paper EU foam.
White glue worked for me too, I just liked the smooth finish from the iron, I did it before assembly once I had tried it out. Only do the exposed edges, not insides of fuselage etc.
You will also find you get quicker at building with practice, stuff like the Simple Scout, Mini Scout and Tiny Trainer are really simple builds that you can crank out in about 3 hrs. Also when it rains you build instead of fly.