If you are using colored paper, the colored side should be on the outside at this point. Start with the colored side down when making the square base to do this.

While completing the bird base and bringing the bottom corner to the top corner the paper will look a bit like an open flower.

To make the head, lift the left side flap slightly and pull the top corner of the paper down in between the back and top layers. Bring it so that it is angled slightly down (so the head will eventually be pointing diagonally up) and crease the fold. To make the tail, lift the right side flap slightly and pull the top right corner down in between the back and top layers. Crease it where it is horizontal when you look at it so that it will extend straight out.

To add a jaw, fold the tip of the head down to the lower corner on that side and unfold. Hold the neck with one hand and push the head against the neck with your other hand. The neck should fold inwards so that the head folds slightly over the neck, creating a jaw. To add a horn, fold the tip of the head down to the bottom point of the jaw and unfold. Open the head by separating the top layer from the bottom layer so you can fold this small piece backwards. This will create a horn on the top of the dragonhead. To thin the neck, fold in both sides. Take small parts of the bottom edges of the neck and fold them in between the layers. Do this in about three different pieces to trim the fat on the neck and make it slimmer.

To put spikes in the tail, open the layers of the tail and fold back the tip upwards wherever you wish your spike to be. Then fold most of the rest of the tail back out, leaving a small crimp in the tail. You can do this near the tip or in the middle of both. You can do a few crimps as well. Reclose the tail. To thin the tail, open the layers and fold the bottom edges inwards. This can again be done in multiple locations to create a thin, whippy-looking tail.

If you only have a regular letter size piece of paper, make it square by folding the upper left corner diagonally down to meet the right side. Then take the upper right corner and fold it down to the left, connecting to the left corner where the first fold was made. There will be a bottom rectangle left over; fold this backwards and crease it well. Unfold the whole paper and cut (or tear if you creased it really well) off the rectangle. You should now have a square piece of paper. [3] X Research source

There will now be what looks like pleats on each side of the diamond.

It will look like a diamond with two pieces sticking up in the middle on each side.

It should now have a piece sticking up on the left side of the paper while the middle and right side of the triangle are horizontal.

There will now be a short piece hanging down, creating the look of a jaw.

It will look like a swimming animal now because it will look like it has flippers.