Custom Product Tag Image for WooCommerce

Hello, I would like to do a couple of things.

1. I would like to increase the size of the icons to 80 px.
2.I want to add the tag name to the alt tags of the images so when you mouse over the icon it shows the name of the tag
3. tags without images yet, I don’t want a generic to show I just want the ones with images to show.

Is this possible now? if there is a suggestion to achieve this now that would be great.