Check these websites. I hope it will help you to achieve higher score in IELTS.
http://www.canadavisa.com/ielts/free-practice-tests.html
General English Grammar and Vocabulary Practice
Basic sentence structure. Find out about SIMPLE, COMPOUND and COMPLEX sentences. Do the quiz.
http://www.eslbee.com/sentences.htm.
Lots of general listening practice, including listening for academic purposes.
http://www.esl-lab.com/
General English practice from the BBC, including video-based work
http://www.bbc.co.uk/worldservice/learningenglish/
Grammar practice, vocabulary practice and podcasts to practice listening
http://a4esl.org/
IELTS Practice
The Cambridge ESOL IELTS home page, which links to excellent introductory IELTS resources
http://www.cambridgeesol.org/teach/ielts/index.htm
Key administrative information for IELTS candidates.
http://www.ielts.org/
Introductory information and exercises in IELTS listening, reading and writing.
http://www.examenglish.com/IELTS/index.php
Academic module writing assessment and sample scripts (click on bottom link ‘sample scripts’).
http://www.cambridgeesol.org/teach/ielts/academic_writing/aboutthepaper/focus_on_assessment.htm
General module writing assessment and sample scripts (click on bottom link ‘sample scripts’).
http://www.cambridgeesol.org/teach/ielts/general_training_writing/aboutthepaper/focus_on_assessment.htm
More IELTS writing samples with estimated grades suggested by teachers.
http://www.ielts-blog.com/category/ielts-writing-samples/
A fairly wide range of resources, including writing practice tasks with model answers.
http://www.ielts-exam.net/index.php
Some free IELTS lessons.
http://www.ieltsgym.com/?id=FreeEnglishlessons
Use www.youtube.com .Try searching for IELTS videos. For example, there are some by the following authors
• Voxguru
• EnglishRyan
• Ukgate
Lots of IELTS resources, including some sample essays with suggested grades and brief teacher reports.
http://www.ielts-blog.com/home/
http://www.askynz.com/ielts/preparation.htm
A web page of useful tips and hints for the exams. Not interactive but informative nonetheless.
http://www.pearsonlongman.com/exams/ielts/students-activities.html
IELTS information provided by a major course book publisher
Best of luck 8)