Be a Spy in the Night

So you want to be a spy at night? This is the right place to learn basic information.

Steps

Wear clothing that matches the environment. For example, if the background directly behind you will be the white siding of a house wear a white/grey shirt. Do not wear a single shirt, but try to layer your clothing so that spectators won't make out the human silhouette. Wear clothes that are at least a size too big, so you look like a big blob of something, that no one would think is human.
Wear navy blue or dark green if spying in grass. Black is a bit too dark, so you will be noticed.
Control your breathing and let your night vision adjust so you don't step on sticks or something. This is especially important when you are near the person you are spying on, or in hearing range of them.
When moving, make slow, fluid movements, so that people watching won't be drawn to your movements.
Move with your surroundings to be harder to catch sight of. Like, if your behind some bushes, and the wind blows, and you are standing still, it will be easy to spot you among the bushes.
Know the layout of the place you are spying on and how many occupants live there.
Try to Wear an army BDU or ACU--whichever suits your environment better.

Make sure you dress appropriate.
The brighter the light inside the person's room the better off you are.
Laying down on your stomach on any terrain that looks a bit like your clothes will make you really hard to see and will make it easy for you to observe with a scope or binoculars.
Wear a face concealer or something. While not necessary, it helps so that if the person sees you.
Tell your parents you're going to the store or friends' house because your parents would never let you go spying outside in the night.
Don't push your luck.
If a light is on in a window you are looking into, there will be a glare. This means the person inside can't really see you and you can see inside better. However, if the spy victim looks out the window, run away slowly.
Don't get caught as it will be hard to explain your situation. However, if you know the person well, it is often times more simple to make an excuse.
Well you can use the kids spy gear to... well if it gets to dark out you can use the night vision goggles LED lights to see in the dark and use there magna-fine glasses to get kind of a closer look.

Make sure the person you are spying on doesn't have a dog, because if the dog sees or smells you, it will bark.
Obviously, don't spy through a front window facing a street or where neighbors could easily see you. They will alert the residents or handle you themselves.
Spying can be illegal at times, so judge whether or not what you're doing is worth the risk of getting caught.
Don't breathe on the window or it will get steamy and the person will notice. Also, try to stay as far away from the window as possible and still get a good view. You can stay completely out of sight sometimes, especially if you use binoculars.
Don't get caught or you could be in major trouble!