Hi Kong, Welcome aboard. I would also suggest introducing yourself to the community here Introductions
As for your post..you might want to explain in some detail about what your website and or logo is for, purpose of design ect. You will get a much better response from the community by doing this first, before posting randoms.
You can see that's the case with the logo. Think about your target audience & what this is telling them, or not as the case may be. Start with brainstorming ideas & concepts, leave Photoshop/PC/Mac to one side and concentrate on getting an idea, a concept, that will communicate what it is the company/site does, and what makes them unique.