Consistent compliance with Wikipedia policy is more important than your personal beliefs. Inconsistent compliance is a good sign of activist editing.
For example, if you assert something, and are presented with countering evidence from a reliable source, do you consider changing your position like a reasonable editor, or do you ignore it to argue your position?
When you join a wiki community, be a constructive editor.
An External links section, if any, should always be placed at the end of the article. It should always be spelled that way, never "External Links" or "external links". The term should be used even if there is only one external link.