I use Lekala patterns regularly but it is true that when it comes to styling, sewing and things like drafting linings/facings, you have to be pretty comfortable doing everything on your own! However i did not have any issue with the printing/taping together...
My recent post A simple black Nettie dress

Cute! I thing it would also help to interface the facing in case it wasn't. But personnally I'm not a facing fan, wherever I can avoid them I do. For this type of collars, a little strip of bias (maybe even contrasting) would look very nice. There is a clear tutorial at Megan Nielsen on how to do this: http://blog.megannielsen.com/2012/10/banksia-sewa...