By the way guys, I pretty much started this thread talking about the necklaces but I've been done with them since like april and totally forgot to post it here.
So here is how they turned out:
https://s13.postimg.org/uptkpuhiv/collier_2.jpg
https://s13.postimg.org/j8kwayekn/collier_3.jpg
https://s3.postimg.org/9zb11bymb/collier.jpg
I ordered the beads on a chinese website but honestly i'd rather not give the link to you as the shipping was HELLA expensive and they hadn't told anything about it on the website before. I had to pay a total of like 40€ (so like $50) just for them and I do suggest you try and find some dupes somewhere else, plus they aren't exactly the same, even though they do look quite similar.
So I just looked at the pic and tried to figure out how to tie the thread pretty much! No real big deal for that really, for the ones with the dangling bits ( ) you just need to tie the thread a few beads away from the end of the necklace and that'll do the trick!
I suggest you place all the beeds the way the necklace is gonna be before you put them on the thread so that you already know how it's gonna look like, test the length of the thread on yourself before and you should be good!
Oh, and the tassels I made with colorful thread I found in a craftstore and followed the instructions to make them from the youtube videos. Super easy to make but I suggest you take rather ticker thread cause some of mines are made with very thin thread and they take forever to make and break more easily!
To attach them to the thread I used very small rings that you can open and close and attached the top of each tassel to the thread in between two beads. It's a bit more wiggly but it does the job!