Hi Mohammad,
Welcome to DF. Good post by Levi btw.
At 13 you have some good potential so I'll cut you some slack.
Regarding the website - You need a secondary accent colour for the site as it has a dour all blue tone to the whole thing. I would lose some of the links as it dominates your work. Make the masthead bigger to use the space and I'm not a lover of the graduated background, makes it feel incomplete.
Regarding the work, some decent stuff in there - despite the heavy blue bias to all the work.
As Levi said, put away the flashy Photoshop effects and concentrate on strong flat logo design. A good logo should always look good in black and white. When showing a design, show how that would work in black only as well. The other thing is to create a lot more space around the logo to make it breathe and be showcased. It is too cramped, put it in a square shape. Also the graduation effect over the logo is pants it makes the designs muddy, lose it. Show the design as pure as you can.and in the best possible way.
Be wary, do not let Photoshop dictate your design or your thinking. Otherwise it will turn you into a one dimentional superficial designer. Idea first, application second. Good Luck
PS: Try this copy in your intro:
"My name is Mohammad Fuaath and I am a 13 year old student, with a love for Graphic Design. In this blog you will see demonstrations of some of my designs and Photoshop skills, as well as links to other useful graphic designing webs.
Constructive critiques in my works are always welcome to enable continual progress and development.
If you are starting a new business and would like a Corporate Identity I am willing to discuss this on a speculative basis."