this picture might help you, or not :D I'm not so good at paint but I did my best :P
first this you do is to tie the fishingline to the earringhook,
then put in the beads on one of the threads.
After putting in the last bead, go back with be thread through the beads again, by skipping the last bead you put in.
then tie some knots again with the thread that was left behind.