I get asked a lot "where do I get my stickers made":
There's an awesome site I use: www.stickerapp.com
I've used them for all my sticker designs and they've always been amazing. You can even preview your design from within the website:
Check out the StickerApps Website here - www.stickerapp.com
and their glorious Instagram page here:
If you have any questions, let me know!