Hey Dinesh - you've got to tidy these up! They look like they were drawn during an earthquake! Consider using the tools in Illustrator for a more professional approach.
Also, you have a line around the top and bottom sections that is visible from the front and side, but disappears at the back? If you are going to amend these, please make sure that you put them up as a new post and not just amend this one, as otherwise the reader can't see how you are improving things :)