What is the ruling on viewing designs and tutorial videos for women's accessories online and manually making and selling similar items, with the buyer's knowledge of this, and is this considered an infringement of intellectual property rights?

That which is known to be exclusively designed by a specific company and bears a trademark, and whose copying is prohibited, may not be imitated, in observance of rights. As for that which is not known to be exclusive, there is no harm in imitating its design, and it is not considered an infringement of intellectual property rights, nor is there any harm in trading with it.