Hi - I am a new sewer working on an apron. The pattern did not come with a liner, but I am adding one to give a more finished look. I have 2 questions.

1. My machine won't cooperate with the lining fabric - every time I try to sew, it catches and gets a knot in the threads. The problem seems to be coming form the bobbin area. Any ideas on why and how I can stop that from happening?

2. I am then to add double bias tape, but the only instructions provided are "attach tape". Can someone tell me how to do that, and am I supposed to hem the apron first, or is this in place of hemming it? Do I insert the tie-backs before using the tape, between the lining and the face, or do I attach the tie-backs after it is all done?

Any help would be much appreciated!!