Not too bad
Yes, as you said, cliche. The two sided face / light & dark is used so much that I almost find it bothersome to look at. But I'll look past that in my review.
First, I fell as if the entire face is almost floating in space. Yes, there is a small suggestion of a body figure in the bottom right corner, but it easily blends with the hair. You could try making it violet, as that would stand out more and still suggest a body figure. An another alternative (which I now think would be better, because it keeps the color scheme of red & blue), would be to make it a very light, almost airy white-blue (which is different than light blue, as it is not actually mixing the two colors, but having small parts of both colors in a given spot, but I don't wanna try and force my style on you). This would work because as an instinct, our eyes percieve lighter tints of colors first, especially if they are against a darker shade. Also, try adding a neck, as it would connect the two components.
I feel as if the lighter half of the face lacks a certain "umph" to it, so to say. I feel as if you shaded it some, it would really pop out more to the viewer. Just because it's a lighter color doesn't mean you shouldn't blend in some purple to certain parts of the face. You might be wondering why on earth you would ever add purple to yellow to shade, but it's because it's yellow's opposite (you can observe this on the color wheel). You would want to take your original color, and add just a touch of violet, and then blend it into only the certain parts of which the person would need to make them less flat. A common mistake of beginning painters is that they want to add black to shade everything. But I've found in my expierence that using a color's opposite really helps a painting. Try using an eisel if you don't already. It can really help you see things in a different way. It's kinda hard to explain, but it's definitely beneficial. Also, try to blend more. I know it's difficult, but I feel as if the face needs more color variety and less choppyness
I saw in one of your other reviews that you use a lot of paint. Don't. Most great art actually contains very little paint. Try using more water.
Overall however, I found that I liked it. It has certain feel to it, and if you say you're only first getting into painting, this definitely would surpass my abilities when I was first starting out.
On an unrelated note however, do you ever use tempera? Most people don't like it and perfer tempera, but I found that I enjoy it much more, by a long shot even. I love doing wishywashy kinda stuff with bleeding in it. You should try it some time.