It's nice going through this thread and seeing the big improvements after people's suggestions. I'll add a few things while I think about it:
- It's worth considering one of the points that's been mentioned a few times already - really try your best to hold the camera on a level when you're taking the photos, as a number of them are
still coming out at an angle. Even if you do find you're taking them at an angle, I know for sure that PhotoImpression, which you mentioned you use, has a facility to rotate the image. I know this because...
- ...I use PhotoImpression (version 3) myself for all my photography. I got it with a really crappy digital camera absolutely years ago and it's still a really nice program to use, though I do also now use GIMP which someone else suggested. One of the features I like most in PhotoImpression is the tone tool, which lets you independantly alter the highlights, midtones, and shadow in an image, rather than just using a simple contrast tool. I usually find myself dropping shadow by 5-10%, and then raising either midtones or highlights by around 5% depending on how exposed the photo is in the first place.
Below is an example, using one of your shots that I really liked.
Here is your original shot of the truck
In photoimpression, I lowered the shadow by about 8% and increased the mid tones and highlights by two or three percent each. I also increased the saturation slightly, and moved the hue slider a couple of percent to the left, which made the red bricks slightly redder and gave the green a deeper colour.
I then popped into GIMP and used a great
tutorial I found to add a little
vignetting to the image.
This focuses your attention more onto the subject, which is the truck. It's perhaps made the image a little too dark in this example, but then photo-editing is all a learning process and done right can really enhance an image - but of course, you need to concentrate on taking the right image in the first place!
- Finally, the balloon shot above - nicely composed, but definitely under-exposed. With a little editing you can make the image lighter and perhaps enhance the colour a little to bring out the yellow on the balloon. Always be careful with adjusting the colour though, especially in cloudy sky, as you can give the clouds a nasty blue tint with too much saturation.