Shopify Theme Editor

I am looking for a shopify editor to edit a website. The website changes are minor. The first thing i'd like to see is the image view layout to be changed to pixel size 265x439 or bigger. The image is attached below. [login to view URL] The Second adjustment i'd like to see is the product image on click/open. When the user clicks on a particular product that they like i'd like the image to be align on the left with a pixel size of 864x1301 or bigger. take a look at this shopify theme for illustration [login to view URL] Third adjustment is alignment. I'd like the "add to cart" and description menu box to be aligned a little more to the right. While the image a little more to the left. Fourth Adjustment Move the header logo to be aligned left and everything else in the menu right. I am looking for the website to look minimalistic but a little more fuller. I have attached images for illustration purposes. Thank you The live site is [login to view URL]