Laurmani, 

Sorry but there is no chance for you to get any seat in JMI.  as your percentile is 88 your rank will be around 1.5 lacs . At this rank it is impossible to secure a seat IN JMI.

Last year cut off rank was

Civil Engineering 41888

Computer Engineering 33992

Electronics and Communication Engineering 39675

Electrical Engineering 41414

Mechanical Engineering 41501

As you can see it is very difficult to get a seat there. 

But you may consider private colleges some private colleges are very good. If you want to know about some private colleges ask in comment and also tell me the branch in which you are interested and the city in which you will be comfortable.