You already have the maximum allowed of four primary partitions (show in dark blue in your doc) and also an extended partition (outlined in green in your doc). You have two problems here - you cannot create an more partitions. also, your drive is badly fragmented with spare space all broken up and unusable as it is. I suggest you do the following:
1. Back up any data you need to save from drives D and E.
2. Remove all partitions except for drive C.
3. Move partition C to the start of the drive.
4. Create one or two partitions in the space after drive C.
5. Copy your backed up data to whichever drives you need them on.