Question: how to do itikaf in makkah?
Answer: You can apply and register yourself in the given period, from 25th Shaban till 10th Ramzan. ... 
Once you reached Makkah then you can take your i'tikaf card from the counter between 15 to 19 of Ramzan.
But if you did not get the itikaf card also any problem, you can do i'tikaf.