Kwstas,
Wow, that's looking good! How much work have you done in Sketchup?
I know it's sort of scary to post your work here for the first time, so kudos for taking that first step.
You'll find the people here are a fantastic source of information, and are more than willing to provide help and advice whenever you need it. I know that when I started out I wouldn't have made it very far without their willingness to answer my many, many questions.
And as far as your "horrible" renders, I see nothing to apologize for. At least you can render. It's something I've never been able to do, gave up on a long time ago. So don't beat yourself up, just keep at it.
I hope you will become a regular here on the forums, and am looking forward to seeing more of your work.
Well done!
Steve