Shopify Ecommerce Website Build

I want to get my Shopify Indian e-commerce website designed. I have done all the work in it. I just need to add some things in it which I am not able to do, so if anyone is interested, you can contact me.

• There are some things I want to get added to my Shopify website.

• Example: Payment Gateway , Register Button ,
Website theme , some other slideshow , checkout process