Partitioning of Hard-disk

I have 160 GB Seagate SATA HDD. I have partitioned it as follows.

C Drive : 15 GB, D Drive : 46 GB, E Drive : 46 GB, F Drive : 45 GB

I do not want to save any files/folders in C drive as I don’t need to backup in future.

Have I made any mistake in partitioning of Hard-disk ?

Please advise me.