I just started drawing stuff in my free time to improve my skills.I use photoshop and I this is the first character head I ever drawn in photoshop.I used shikamaru from naruto as a reference at start just to create some topology lines and after that I created the rest from my imagination.
I know that there are some problems but there might be some that I didnt even recognized.
Soo let me know what you think 
Below is my standard advice for beginner artists that I feel need it:
It’s really hard to critique works from artists who are still very early in their artistic development, just like how it’s very hard to critique someone’s language skills if they are just starting to learn a new language, because so much of what they do is wrong. To critique beginner’s work would no longer be critique–it would become instruction in all the basics, because you would have to explain every aspect of the visual art foundation in detail and how they related to the mistakes made in the image–from composition, perspective, values, lighting, tonal composition, atmospheric perspective, color temperature, color contrast, radiosity/color bleed, deceptive colors, contextural color illusions, anatomy, figure, psychological and physiological roots of body language and facial expressions, aesthetic sensibility, hierarchy of edges, brushwork, line quality, visual storytelling techniques, and so on.
My suggestion is for you to focus on learning the critical foundations of visual art–don’t rush into trying to construct your own images because you lack the necessarily knowledge/skill/experience to do your ideas any justice at this point. Head on over to the Art Techniques & Theories forum (linked below in my signature) and start reading the sticky threads–they will help you far more than any critique you’re going to get at this point, because any critique you get would essentially be very condensed and simplified art instruction anyway, and they won’t help you that much if you aren’t learning those instructions in proper context through a carefully laid out learning/teaching plan.
You also might want to look at the books of Andrew Loomis… they are pretty good and completely free.
You can find them here:
http://alexhays.com/loomis/
This is really usefull.I checked out some stuff and read about making simple circles and similar to define the head.I was already thinking that way in 3d stuff,I just need to apply it to 2D stuff
Just wondering before I pursue my goal,drawing anime and cartoons is done the same way?
Thanks very much 
All stylizations are based on reality. It doesn’t matter if it’s anime/manga, Disney, Pixar, American superhero comic books, European graphic novels, Sunday Morning comic strips–they are all stylizations that are rooted in reality. You must learn how reality works before you can understand why artists made the decisions they made when they chose to simplify, exaggerate, idealize, and form the styles they ended up with.
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