I've had some fun retouching one of your pictures (the fifth one) with photoshop. Just check out the difference it makes. If you want, I can send you the full resolution version and I may also delete it from my computer if you don't want me to use it. Anyway, be careful with your pictures, it's not very safe to put the full resolution pics on the Internet.
Anyway, with this little retouching, I just want to urge everyone of you to try some retouching, it is so amazing, and it makes your picture so much more 'professional', lol. Anyway, Photoshop (Elements) is a tremendous tool.
For some of you interested in what I've done, actually I worked with Photoshop Elements 3,
- I first started by doing a shadow/highlight change (I only darkened the grass),
- than I put a level adjustment layer to get a better impression of depth of field and to balance a bit all the luminosity
- I added a brightness/contrast adjustment layer and toyed a bit with it
- and finally I added a Hue/Saturation adjustment layer to accentuate a bit the red, yellow and green color (not too much otherwise it wouldn't have seem very nice with the barrier
If you want to learn about taking picture along with photoshoping,
www.radiantvista.com is a brilliant site, and also with great video podcasts, I learn incredibly lot with them.
God bless you