melvin,
I have been flyfishing for over 30 years but I also consider myself a rookie in the sport of flyfishing for carp. I did invest a fair amount of time with it last summer for my first season of carping ..... I had a blast. I have spent a lot of time tying carp flies, reading about carp, and picking the brains of some of the more experienced carp fishermen right here on PAFF (and we have some good ones). Carp are very spooky fish. They have a very large lateral line and are able to detect vibrations from in the water and on the bank. So first off, a stealthy approach is a must. Drab colored clothing, don't cast any shadows on the water and very slow movement are all importatnt factors to consider. Also, the ability to present the fly to a feeding carp with pinpoint accuracy (roughly a foot in front of the fish) with a minimum of false casting will increase hook ups. I have found myself, slowing down, being patient and spending a lot of time just observing carp to figure out what they are doing. You want to be targeting feeding carp (one good indicator is the muddy clould of water created by a carp as it roots in the silt to dislodge nymphs and crayfish, etc.) Casting to a carp that is not actually feeding will probably be unproductive.
As far as flies go, I have attached a photo of some of the flies that I tied up this winter for this seasons carp box. They are all basically tied the same... bead chain or dumbell eyes, hook point up, natural and synthetic materials, a bit of flash is ok, and rust or olive colors seem to work well. A simple old wooly bugger can be a great carp fly. Sight fishing for carp is a lot of fun and can definitiely make you an all around better flyfisherman. When you set the hook on that first 12 pounder and the reel starts singin' and the adrenaline starts pumping. You will be hooked! Good luck.