hello I would like the section that displays price, size , brief description of product to be on the right side of the image
at the moment my image is above information like so
but I would like it to the write of image like this
I would also like to change you select the products colours , from words to real colours like so
You can change the theme to 'pipeline' or any other free theme which has the product page with the layout you want( eg Debut).
in order to display color as a swatch button you can follow, following tutorials
It is possible with code customization and may take time, you may need the support of a Shopify expert as this may not be straight forward.
Another option is to use some Page Builder application like PageFly which provides a WYSIWIG ediotos