The relationship between mother in law and daughter in law is the most complicated and it seems that age-old problem will never be solved. Building good relationship between his mother will help to avoid many family disputes and tensed relations between spouses. To reach all these you should bear in mind few nuances. 

Don't Make your Husband the Participant of your Relations

For man his mother's and your disputes are horrible. On one side stands his mother the most precious person on the world, on the other one you his beloved wife. Standing by one party he will offence the opposite one. So there is no need husband to know about you and your mother in law argument.  Clarify your problems only with her. Nevertheless if it seems you cannot work it out by our own, share the matter with your husband only without any critical or rude words. 

Appreciate her Best Sides

Though the bad sides try to find and appreciate her best once.  Praise her merits, for example how well she cooks, how quickly she cleans the house etc. In this way you will show that you see and appreciate her efforts.

Consult

Try to ask some advice about this or that matter. Especially, when  the issue has household nature. Highly experienced housewife will like that. So she will feel appreciated and special which will also lead building good relationship.

Pay Attention

If you live separately visit or call her frequently. The presence of husband is not obligatory during your meetings. She will understand that you are not careless and you worry about her. Coffee and sweets will draw closer you. You can help her dealing with housework. To go to shopping is also excellent idea. 

Make Gifts

Everyone loves gifts. Sometimes give her not expensive gifts. Treats will please her and establish warm atmosphere. But warn her that you are not expecting response: her warm treat is a gift for you. 

Try To Accept her the Way She is

All do have flaws, does mother in law also. Try to accept her as actually she is. Remember you are also the member of the family so how difficult it will be treated herself as your blood mother.