There are a lot of little tricks you can do.
When you starch, run the iron over the fabric first to heat it up, so the starch soaks in. Then rub your hand over the area to spread out the remaining starch. This prevents your cammies from becoming shiny. (So it's Iron, Starch, Smooth, Iron) It is a little more work, but it definitely pays off (IMO). (This is woodlands only. If you are wearing diggies, just wash and wear)
Tie two boot bands together in the middle. This makes your boot blouse tighter and makes it look a little better. Basically, instead of using one boot band, you are using two.
If you aren't standing an inspection, and you want a set of cammies to look squared away, just for every-day usage, you could consider going to a tailor shop and having the buttons on the pockets removed, and getting the flaps sown down. Also the fabric on the cargo pockets can be sown down flat. I have seen more than a few people do this to their cammies and it looks pretty outstanding. Make sure the tailor does a good job, so that everything looks squared away. (Also for woodlands only)
I have heard of it, but never seen it done. Apparently, you can take Fishing-line, tape it to the inside of a crease (make sure this is done with perfect precision). Then iron it on the highest heat and really mash the iron down. Then remove the tape. Supposedly the fishing-line will melt to the inside of the crease, and you will have perfect razor sharp creases every time.
You might want to practice that one on an old unserviceable set of cammies first, if you want to try it at all that is. (Woodlands only)
For the cover. Get a piece of cardboard and cut it up and place it in the flaps on the inside to get it to stand up straight with no wrinkles. Also, you might want to get a piece of cardboard and cut it down to size in an octagon shape and place it in the top of your cover. This will make it look really sharp, just make sure it is large enough to be tight on the top, or else it might fall out.
For the bill of the cover, get a can (brass-o works perfect) and a ruler. Tape the ruler to one side of the can, so that it sticks straight up. Now put the back of the cover on the ruler, and pull the bill down so that it wraps around the can (giving it the perfect shape). Now take two boot bands and wrap them around the bill to hold the cover in shape. Starch it liberally, and give it a weekend to dry out. On monday it will be ready to go.