OMG lol I totally thought the background was a photo in the thumbnail XD.

This looks great. You really did a nice job, especially on the background and the 3/4 view/perspective on the figures.

Since you gave me such a lovely critique on my still life, I'll try to return the favor

The things I would critique are as follows:
The perspective on the dragon is good other than the tail, which seems to be swooshing to the side towards the viewer instead of back behind the dragon, but it is still ambiguous. It should be clear by the lighting and atmospheric perspective where in space the tail is.

The dragon is rendered nicely but the lighting on him and his rider is a bit to even for a nighttime scene. I think the contrast between the shadows and the light from above and below should be more intense. In night scenes, there is often one or two strong light sources, and a great deal of diffused light is not often seen because it makes the figure blend too much with other things in the image. In this case however, lighting is dramatic in the city and ambiguous or flat on the figures in the foreground. Also, even within the figure there will be a priority to the placement of the strongest light and shadow. [link] If you haven't already seen this, it was incredibly helpful to me so I hope you'll take a look. My teachers always told me, because i struggled with this exact thing in many of my assignments, that all areas of the painting cannot be treated alike, or there will be no visual priority, and the painting will be hard to look at. The focal point should grab the viewers' eye and be very determined about it. the other areas should support the focal point, not contend with it.

The last thing I would say is, be careful about putting your figure so close to the edge of the image. Its understandable to crop out the wings since they are so long, but when you make other parts of a figure like the forearms, head, and tail so near to the edge of the image, it creates a visual tension and breaks the illusion of depth. The viewer sees a flat figure superimposed over a background rather than a figure in a depth of space. And, it sadly encourages the viewer to see the dragon in profile rather than the 3/4 view. Since you rendered the perspective in the main body so well, I think it is a shame to have that lovely 3/4 view be ignored.

The only other thing I would say, though I don't know what your process was in painting this image is some good advice many of my teachers gave me: It won't do to paint the environment and figure or objects separately. You must paint them all at once. When you paint a background to completion and then add the figure or visa versa, it generally looks as though there is no integration between them and the illusion of depth and space is destroyed. In order to create the likeness of objects or figures in an environment, it is necessary to paint them into their environment while painting the environment itself, giving them equal attention throughout the painting process.

I hope the things I've written will be helpful and enlightening! Keep up the great work!

wonderful job its beautiful i love it

Wow. That. Is. Epic. I love the background I could see this as a cover for a book

cool drawing