Those bubbly bitcoin logos around the main square section makes it look ugly rather than fancy, don't you think so?
Also add input section for BTC amoung they would like to get paid, if possible put converter using preev.com api or similar one for currency of user's choice.
Like the concept and found it quite smooth, yet to scan the created QR hope system don't tweak the bitcoin address in the process

The code is clean & transparent so no monkey business

. Those fancy bubbly icons are just there to make the QR generation process look fancy

. Only the QR is downloaded in the end