Hover over picture and adding a text

Hello.

I’m having some trouble with my product pictures. I’m using Woocommerce plugin on zeeNoble theme.

Take a look at this picture:
https://imgur.com/8Mu5rBb

The reason the picture is so small is because it is the only way for the picture to show the original resolution. If i scale up the picture, the picture will become low quality and ugly.

I want my customers to simply hover over the picture and the picture will be shown in fullsize.

I also think it would be appropriate to add a little text saying something like: “Hover over the picture so view fullsize”

My coding experience is very poor and i don’t even know how to write a code which will result in a short text.

I hope someone outthere can help me out here:)