It's better to have the OS partition in the lower (left hand) address of the HD closer to where the disk reader parks, for slightly faster reads.
This is why I suggested that after creating your System Reserved partition you delete F, Resize C to the left into that space. You could then resize the right side of C to make room for a new data partition.
This advice was based on the partition appearing empty in the screenshot. If you intend to use it for something else then it could just as easily be a new partition created from the right side of C.
To do these operations, boot Partition Wizard bootable CD,
rightclick on F to Delete, click OK. Rightclick on C to Resize, drag left grey border all the way to left, drag right grey border to the left by enough to make your desired data partition, click OK. Rightclick in space for new partition, select Create new NTFS Primary, choose next letter, type a label, OK. Apply all steps.