Astral Time Travelling.....
Seeing the future through astral can be fustrating, because of the fact that what you think = what is, makes seeing the future tricky as you have to be careful about not letting your imagination affect what you see.
One of the most common ways I have heard of to look into the future is to imagine a theatre, its shape, its size, its smells, how it feels to walk through it and what its like to be there, maybe even where it is in the astral world. Then imagine being in one of the movie projection rooms, look and observe all the features, the chairs, the screen, and anything else you can about the room. Then think about the time, the place that you want to see in the future, and then imagine the projector starting and showing the movie of the future on the screen.
Its very important to keep your mind clear and stay relaxed, if you allow yourself to become excited about what you are about to see or what your already watching, or if you let your thoughts wander... it usually ends up in being sent right back to your physical body or getting a distorted, inaccurate version of the future.
Once you are finished watching the future, think about the projector stopping and then leave the theatre, trying to remember every detail you can. The next time you want to see the future just think about going to the theatre again and repeat what you did previously.
I wouldn't suggest attempting to go into the future your watching yourself, as you can sometimes unwillingly try to effect what is happening and distort what the future truly is.