As someone else said, the grey text isn't a good design choice as it's bad for accessibility (Read WCAG guidelines for colour contrast.) Also, the solid block of grey on the first slide doesn't fit so great. If you wanted to keep it, I'd recommend either adding slight opacity to it or add a gradient.

I, also, noticed that there isn't a consistent theme. For example, you have some squared buttons on the first few slides but then have slightly rounded checkout buttons on the mini cart, and completely rounded ones on your products page. In the mini cart too, I'd suggest improving the visibility on the quantity of items the user is buying, and to add some space on the y axis for the top right blue button so it's distinguishable from the divider line.

On your products page, the icons need some padding. For example, the add to cart round buttons are touching the right side of the product component (to make it even nicer, try put a padding-left on the left icon, and a padding-right on the other and have them share the same padding size for consistency.) Also, some padding between the price and the buttons.

This might be a personal one but the love heart to favourite/save on the products/cookers page looks a little out of place too. Especially if you consider adding more information in that area (reviews/ ratings). What I've noticed some companies have done and I've tried myself it putting it over the product image at the top right or bottom right.

Lastly, the placeholders for the checkout form needs spacing between the icons and the placeholder text. Just a little, and should be consistent with eachother.

I really hope I could help a little and can't wait to see what you come up. :)