am i supposed to cut the weft?

i hold the weft up against my head, have a bottle of nail glue (yes, for fingernails) and cut the weft/ immediately put a drop or two of glue on the cut ends.....if you have machine sewn wefts (its a pretty wide weft) then it proably would do ok without the glue but it still helps to reinforce that cut end and i bring the needle to thread the clips on right through the weft. if you have handtied wefts (its usually a tiny, sometimes threadlike weft) you must glue the cut end or it will unravel. if i put clips on handtied i just bring the thread around the weft (because its too tiny to push a needle through anyway)

here's a site that has a  tutorial on making your own clip ins...(for me it really helped to have bought clip ins ready made first, and from then on i use those as a guide to know where to sew the clips on)....good luck!:

http://www.doctoredlocks.com/store/demo/clip_sets/frames.htm