All that said, here are some pointers, or tips, that some people find useful. Unless the instructions say otherwise, you should make all your creases run from one side of the paper to the other. Be careful that the paper doesn't slide or slip as you do this. You may find it easier to hold the paper in place and run your finger back over the crease two or three times, and then when you have done that, to run the edge of your fingernail along the crease. Many people think it is easier to fold the paper away from your body.
Some people find that folding to one side or the other is easier.
Beware of any tendency to rush. Particularly with the initial creases of a model. The first creases you make are the foundations for most of the creases that follow. The language of origami diagrams can be very confusing when you are just learning. This page will try to help you understand the language of origami.