You're very pretty, by the way. <3
I think the necklace it's adorable! I love the colors, the originality of the necklace and all the little charms. <3
Only draw back is that it is so unique that it needs clothing that will compliment it. It's not the type of necklace that can go with everything. I think the shirt you used in the image is fine with it, though. I think it's a keeper.
Also, I think the necklace looks brighter on the couch because the couch is a darker tone than your skin, so the colors stand out a bit more. xD