Is it incumbent on a father to cover the marriage costs of his son if the latter couldn`t afford them?
                                The son should seek the help of his relatives in order to convince his father to do the aforesaid, and the father should make sure that his son doesn`t commit fornication through helping him to get married, and Allah will reward him for doing so.
                             
                        
                            
                                
                                Is it permissible for a Muslim woman to leave her house adorned and without wearing her proper Islamic attire?
                                A Muslim woman isn't permitted to leave her house adorned and without wearing proper Islamic attire. And Allah Knows Best.
                             
                        
                            
                                
                                For passing time, my friends and I have called a famous diviner. She told me that somebody had cast a spill on me not to get married for the rest of my life. I didn`t believe her, but I can`t forget her words. How can I protect myself from such thing?
                                Praise be to Allah the Lord of the Worlds.
Dealing with diviners is forbidden and what you are suffering from is due to your having consulted that diviner. Have trust in Allah and ask Him for forgiveness, but rest assured that whatever Allah has decreed will take place. And Allah The Almighty Knows Best.
                             
                        
                            
                                
                                Is it permissible for a person who has to make up for missed fasts to fast six days of Shawwal (the month directly after Ramadan) before making up for the missed fasts?
                                Yes, it is permissible for him/her to do so, but it is better that they make up for missed fasts first. And Allah Knows Best.