skilled wordpress developer to modify a site

Hello.. I need a skilled wordpress developer to make small changes in a wordprss theme. 1- The site is already has the feature "only registered users can view the site content" using force-login plugin. I need the first page to have a nice background and nice login - sign up form just like [login to view URL] I should be able to change the background easily later. 2-text/font change alignment and size 3- add logo