One thing is for sure – personal blogs should reflect the blogger’s personality. But, since you are sharing it with others, at least be considerate in choosing designs and plugins. Be friendly, choose designs and colors that are not offensive.
Organize your blog! Categorize your topics accordingly. And so if visitors want to read further on certain topics they can easily check out your categories. Use of plugins like recent post and related post is also helpful. If creating links to other site or topic, be sure that your links will open the correct page and are not broken.