If you are a primary applicant with CLB 9+ there isn't much necessity for your spouse to re-take IELTS as the maximum points for spouse's for language stands at 20. For his existing score, I guess you could get 16 most probably.Could you advise....shall I use your technique to improve my husband's(spouse's) ielts score. He has a 7.5....L 7.5 R 8 W 6.5 S7...how much would the effect be...I akready have 8.5