Keep headers/logos under 125 pixels high. It takes up valuable viewing space, especially for laptop users, that is best left for the good stuff to appear"above the fold" Take a cue from the big companies, simple logos done well say it all. This is our #1 pet peeve - screaming logos and headers!
Besides the text and graphics you're creating, you're going to require a protection and backup alternative for your site. secure your wordpress site is important, and if you do not protect and back up your site you could lose important data and information that might be tough to restore. You don't want to need to start over from scratch after you've done all that work, so make sure you're secure.
There are ways to pull this off, and many of them involve re-establishing databases and more and FTPing files, exporting and copying. Some of them are very complicated, so it's important that you go for the one that is best. Then you may want to look into using a plugin for WordPress backups, if you're not of the technical persuasion.
A snap to move - If, for some reason, you need to relocate your website, like a domain name change or a new hosting company, getting your files at your fingertips can save you oodles of time, hassle, and the demand for tech help.
Make a note of your new password! I recommend the free or paid version of the software *Roboform* to remember your passwords.
There are always going to be risks being online (or even just being alive!) Also it's easy to get caught up in the fear. We put the breaks on, As soon as we get caught up in the panic. This isn't a fantastic response. Take some common sense precautions forge ahead. If something does happen, it is going to need to be dealt with then and of quaking in this page your boots 23, no amount will have helped. All is good, if nothing does and you haven't made yourself ill with worry.