Need a UI/UX designer to create mockups [mobile]

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I'm in the process of revising a simple website and I need some mockups (I provide the wireframes) for several panels. Your mockups should be complete: I should be able to hand then off to a front end developer for him to write hymn/css. In your response, please answer the following: 1. What's is 3+9/2? 2. What os, software suites do you use for mockups? 3. Do you code in any languages/platforms at all? If so, in which? 4. What is a gutter? 5. What is the difference between padding and margin? 6. What color compliments yellow and why? 7. How would you use a shadow? 8. When would you use absolute positioning? 9. Please provide a link to your online portfolio (if any).