A reminder that if you’re creating custom .tpl files (for, say, a paragraph bundle) then enabling theme debugging in your settings.php file can be helpful:
$conf['theme_debug'] = TRUE;
Which would expose HTML comments that detail template file suggestions:
<!-- FILE NAME SUGGESTIONS: * paragraphs-item-1366.tpl.php * paragraphs-item-callout-block-full.tpl.php x paragraphs-item-callout-block.tpl.php * paragraphs-item.tpl.php * entity.tpl.php -->
Where the form is paragraphs-item-- paragraph machine (bundle) name -- view mode .tpl.php
This is your reminder that The Themery’s chapters on theming from The Definitive Guide to Drupal 7 are worth bookmarking.