First try at Panoramas

Finally got around to trying a few panoramas. Overall I wasn't very happy with the results.
All 3 were shot in manual mode and handheld. Stitching was attempted in PS. I can still where the stitching is, especially in the larger versions. Click images for larger versions.
Any help appreciated. Photoshop stitching techniques?
Sydney Harbour - 3 frames
Monolith Valley - 3 frames
Pigeon House Mt from The Castle - 8 frames
Brad
All 3 were shot in manual mode and handheld. Stitching was attempted in PS. I can still where the stitching is, especially in the larger versions. Click images for larger versions.
Any help appreciated. Photoshop stitching techniques?
Sydney Harbour - 3 frames

Monolith Valley - 3 frames

Pigeon House Mt from The Castle - 8 frames

Brad