It would be better for any parent wanting to buy kids curtains to do so online. This is because there are different options that you could benefit from through online shopping which are sadly not possible when you buy stuff on the high street.
There are many advantages in shopping online for bedroom accessories, both for parents as well as kids including but not limited to a better variety that you could choose from. Online shopping is known to be asy and convenient as opposed to shopping locally in brick and mortar stores which require that you spare time for the same often bearing full of hassle.
If you do not want to waste your precious time on petty stuff and if you would rather spend your time in a constructive manner without compromising on the quality of bedroom accessories that you acquire for your kids, then your best option by far would be to buy your chosen accessories including childrens curtains and wallpapers over the internet.
You should always weigh your requirements against convenience as well as comfort and not to mention pricing which matters a lot. Online stores tend to have lower overheads which allows them to help you save money off your shopping.