How can I improve conversion rates on my reworked website?

Hi

So I have now re-worked my website to make it both Mobile and Desktop friendly. I have set up shopping campaigns for both USA and UK customers however I am not converting… Can anyone offer advise on this please or on what my store is lacking still? Any advise would be gratefully recieved.

Many thanks Emma

Sorry the store is; www.gyutochefknives.com