diff --git a/builder/etc/builder_1.png b/builder/etc/builder_1.png new file mode 100644 index 000000000..ec892c15f Binary files /dev/null and b/builder/etc/builder_1.png differ diff --git a/double-checked-locking/etc/double_checked_locking_1.png b/double-checked-locking/etc/double_checked_locking_1.png new file mode 100644 index 000000000..cced091b9 Binary files /dev/null and b/double-checked-locking/etc/double_checked_locking_1.png differ diff --git a/factory-method/etc/factory-method_1.png b/factory-method/etc/factory-method_1.png new file mode 100644 index 000000000..6b9276781 Binary files /dev/null and b/factory-method/etc/factory-method_1.png differ