what size cutter are you using? i use my 18mm one for curved templates fairly successfully= it does take some practice - use some scraps & only 1-2 layers of fabric at a time- after a few trials you will get the hang of it...then you will wonder why it was so hard at first----do you remember the first time you tried to use a rotory cutter? my first time with a straight ruler was not so straight-or easy- i have found if the cutter is too large though it is easier to just trace around the template then cut out the shapes- you really do need a small cutter for curves.