Always make sure to pre-shrink interfacings, lining fabric and outer fabric.

I've learned the hard way. If fabrics aren't pre-shrunk, they can pucker and pull when interfacing is ironed on.

I've taken lately to not using fusible interfacing.

Rather, I will use hair canvas and fusible web. Which is a very light weight, heat-set film.

I find that I get a better bond with using the fusible web than fusible interfacing. Fabric stores will be able to point you to the right product.

It means more work, in that you have to cut out a piece of the stuff for each garment part that is to be interfaced, but all told, it's a helluva lot faster than tailor basting all interfacings in place.

Same procedure for fusible interfacing, in that it is heat set, with the fusible web sandwiched in between the hair canvas and the wrong side of the garment piece.

It everything has been pre-shrunk, and ironed flat, there should be no problems.

Regards aye,

T.