Make Small Additions to My Shopify Theme- Quick Contract!

Only Intermediate to Expert Shopify theme coders, please. I have a Shopify theme that was purchased previously but now the developer will not respond to complete the modifications that I need. The theme works perfectly now but there are some changes/additions that I'd like to make to it to make it better. These modifications include: -adding ability to add a header banner rather than keeping it just one color -Ability to change the header logo and navigation to center if wanted within the theme customizer. - reduce the white space within the header when certain sections are not in use - Add a Rich Text section to the homepage is only the center 75% of the screen (rather than full-width). This section should be able to have a custom text field or linking to a Page within Shopify so that could show on the homepage instead. -The Product pages side descriptions are currently defaulted to be in all Caps. We'd like it to be normal sentence case. You will be added as a staff account to our Shopify store to complete the work. There may be more additions/changes that we would like to be implemented in the future for an additional payment to you. If this contract is completed within 1 week, a bonus will be added to the payment.