I am not an expert. But I think the following points would be valuable.
There are lot of things happening in your design. Its too busy. Spacing is awkward in different areas. On the Home page, Home and Cart are selected in the menu, hows that possible? There are 3 types of texts on the slider, heading, sub-heading and body this confuses the user, I would ask you to stick with just two of it. Drop shadow 135 degree - please avoid. You may need to pick another yellow orange and turquoise green. Remove couple of advertisement boxes. On the product section use everything on the same background and have consistency across your design. Just a suggestion-on hover try blurring the background image. Get rid of the underline on the headings. Underlining only one word just doesn’t look right to my eyes.
Hope this helps.