I think this drawing very good. The farris wheel create a star effect that makes me think of winter holiday like christmas. it done in dark color, which is very hard to do, but you make it look like it take no effort to do, which means it have professional look! I like how you use chain link fence in foreground and cast light on it by using white paint or eraser to give it smooth effect. the girl very kawai!!! But she also kind of nerdy smart girl, but nice legs and stocking make her sexy too. adding the bike cool too. basket look very hard to draw. i think it super awesome o(^▽^)o
I saw this in the forums a while ago, actually, and I liked it quite a bit. The composition and lighting are both really nice and the details like lighting on the netting give the necessary finishing touches to the piece. I want to say that I really dislike the use of white and black in paintings and drawings. Black and white are good for design-work or things that are meant to have lines and meant to have stylistic highlights. For a piece like this, which is a painting filled with rich tones and colors, black and white create "holes" in the picture because they're visually too intense. The eyes are immediately drawn to all the places that have black and have white, and this creates a bit of chaos and uncomfortableness.
For exampble, there is white n the middle of your ferris wheel and that brightness is the same as the whites on the fence, on the bike, and in many other places. All of those whites are made to look even brighter by the black parts in the ferris wheel, the shadows, the fence's basic form, etc. Normally, accents are meant to help guide a viewer's eyes around a picture, but when there are so many accents, it's hard to look at just one. There's no particular flow from one bright spot to the next either, making the image cluttered in terms of light composition.
A piece with good interest and guidance should be able to guild the viewer from one part of the picture to the next. For you, it would be, maybe, from the ferris wheel to the face, from the face to the bike, and from the bike back to the ferris wheel. Along the way, the outer edge of the ferris wheel could guid toward the roof of the building, the girl's clothing, and other things. In this manner, a story can be told. Black and white will take away from that "journey" within a picture.
As an alternative, try using dull but complimentary or near-complimentary colors instead (opposite side of the color wheel or close to the opposite side of the color wheel). Use pale yellows and pale yellow-greens or even pale blues for lighting things. Purple and red on top of teal looks really good for shading.