I'm developing private shopping site workflow. (like gilt.com, markavip.com)
But I'm unable to decide login/register page step.

I think that location;

 - Product list page http://i.imgur.com/xZQ7QEP.png
 - Product detail page http://i.imgur.com/cSw4me0.png

After pressing the button, the form will not be included if there is a product in basket. This may be a bad impression. Because add product to basket which you select, such as a users favorite uses.

How do you think could be improved in a workflow?