How can I safely sharpen a small craft knife?
If the knife is really that blunt, I recommend taking it to be professionally sharpened. Many craft stores offer this service either as part of their regular services or on a part-time basis (once or twice a month). Otherwise, you may have a knife sharpener in your city who would be able to do it. The cost is generally based on the length of the blade, so should not be very high for your knife.

Unless you have a good-quality mechanical sharpener at home and know how to use it well - or have learned how to use a whetstone and steel, it will be difficult for you to return the knife to the necessary level of sharpness for crafting.

Honers can only realign the blade slightly and are for daily knife maintenance, they can not actually sharpen a knife.