Check out this
page first and then go to YouTube and do a quick search and you'll find great videos on how to do it.
Basically, watch the stigma in the center of the flower. It will take a couple of days before its ready to be pollinated after opening. You will know when the stigma is receptive when it looks like a pom pom...
This is what I've done in the past. Once I'm sure the stigma is ready I took some tweezers and removed an anther that produces the pollen. I took one entire anther off and rubbed the pollen on the stigma. I did this a few times throughout the week. Once the flower has been pollinated it will close and begin to swell. After three or four weeks the ovary will be fully swollen and probably will have dried up and turned brown. This is normal. The ovary will dry up and split open revealing the seeds inside. Now you are ready to cut the stalk and and place it on a paper towel to let it finish drying out. After its sat out for a night you can attempt to remove the seeds. CAUTION
: be careful when removing the seeds. It can be easily done by rubbing your thumb over the top of the seeds. The caution part is that the seeds shot everywhere if your not careful. I'm not sure if thats a design to spread the seeds or just an issue but they do seem to spring off and it'll be hard to find them if they fall on the floor.
It is best to cross pollinate but self pollination can be done. You'll probably end up with a higher yield of seeds if you cross pollinate but it is not necessary.
Good luck with pollinating your first traps. Its is fun to know you chose these two parents, pollinated them and successfully got seeds. Then germinated the seeds and grew them to maturity. Remember you have to have patients they grow slowly. You don't need to stratify. I had almost a 100% germination taking them straight from the seed pod to the soil.
Keep us posted on your journey.