Hi Achintya,

To enter the admission process of MICA, you must meet the MICAT cutoff. MICA, this year, has given 20 percent weightage to CAT score, 30 percent weightage to score in MICAT exam, 20 percent to Group Exercise and 30 percent to Personal Interview, in its final selection procedure.  

As per the MICAT selection procedure, you must have a valid score in CAT. So, you're good to go with this percentile. Second, you need to meet the official MICAT cutoff as decided by the institute. Check MICAT cutoff 2018 and MICAT 2018 Selection Procedure to know more about it.

As far as the preparation tips are concerned, check MICAT Preparation Tips.

All the best.