i think the rendering you're doing is misleading because it looks like there are edges that haven't been drawn on the render and edges drawn on the render where there might not be edges
you should do what GecT showed you in her second post
in the view port panel click Shading > Wireframe on Shaded (so that the little tick is next to it)
and make sure you're in a shaded mode (hit 5 on your keyboard)
then take a screen shot (like you did in your 11th post)
as for the model it looks a lot better, the frame for the back of the chair looks a lot better
notice how in the reference images GecT showed you the slates (i have no idea what they are called, but they are the flat stick things on the inside of the frame of the back of the chair) at the back of the chair are slanted and how the slates on the back of your chair are perfectly straight up? Also the slates aren't in a straight line on the chair. you may or may not want to do the same as whats in the pictures, just a suggestion, it's up to you
that's a "Ch" pronounced as a "K"
Computer skills I should have:
Objective C, C#, Java, MEL. Python, C++, XML, JavaScript, XSLT, HTML, SQL, CSS, FXScript, Clips, SOAR, ActionScript, OpenGL, DirectX
Maya, XSI, Photoshop, AfterEffects, Motion, Illustrator, Flash, Swift3D