Alter/Change Website Template Look

I already have a website template set-up with Bigcommerce. I like the template and would like to keep the layout as it. I need someone to change and alter the way the website look. Need some changes to the carousel feature size also the product block thumbnail size, back ground looks and colours. I need simple yet something that attracts the eye. I also need someone to just check if al sizes are in line also if the website is in order so that i can launch it. I will ad products myself as well as the products picture. Iam tight on time and looking to complete this in a day or less. I have al the images of the carousel, just to set a back ground that works. This is for a paintball shop. Current look of the website is attached. There will be new products displayed underneath the carousel as soon as I add them.