Actually, a little dot of Elmer's School Glue (washes out easily) when you are pressing your seams works wonders. There is a tool out there that fits over the top of the glue so you really can get a thin line of glue (I can't remember where I saw it but it was online). Just a wee dot and press it...works like magic!
http://sharonschamber.com/shopping%2...ewproducts.htm They are called glue tips...of course, they are out of stock right now, but for future reference!