The preview will not show errors, you will need to click on 'Error Check' to see if your listing passes before posting.
As for Calculated Shipping just be sure to:
1. Choose Calculated Shipping
2. Enter Weight of package+item
3. Add your various Shipping Services (which yours looks normal)
4. Choose any Combined Shipping Discounts you want to offer
5. Choose your 'Auctiva Shipping Insurance Option'
6. Enter your Packaging & Handling Fee. This will be added to the actual shipping cost when a customer puts in their zip.
Click on 'error check' and see what it says up top. If it passes, you are ready to post!