shopify developer

Hi there
I am looking for an expert developer in shopify who can go in and make some changes to my website.
there is a lot of small tasks that i need doing such as
Change colour for some of the buttons
Reducing white space in some of the pages
Re-sizing banners
and a few more things
I am looking to work with someone on an ongoing basis
Please include examples of some websites you have worked on
my website www.revivalshots.com
thanks