Your delivery charges are too high. Even if ordering to deliver to your shop, it is still a lot to pay for delivery. Your delivery fee is higher than most other clothing and footwear shops. You need to look into your delivery fee. Also, although the delivery costs much more than other retailers, it still takes a significant time for the item to be delivered, which doesn't make sense at all.
In addition, you do not offer student discounts, which most other and similar retailers offer. So I am not happy with the service.