Regarding testing accuracy and class score values

[Ram-Godavarthi]

@WalterMa
I found it very useful.
But i am not getting class scores very less like 0.5-0.8...
How can we increase the class scores close to 0.90 ...
Also Have you tried to increase the testing accuracy close to 90%.

I have only 2 classes.. I want something close to 90%+..

Can you suggest me some tuning steps to increase it.