My latest project (gift), is a bag with a recessed zip. It was my first try and being an impatient control freak, I worked it out myself. There are things that I didn’t get quite right, so I kind of know for next time, and the lining is getting caught in the zip, so I have to fix that before I can consider it done. Otherwise, quite happy with it. This is the second time I’ve had interfacing issues though. It makes the fabric all wrinkly. Any tips, or do I just have to be extra careful, like when you put a screen cover on your phone to avoid the air bubbles?