Need help with .htaccess template

I made an .htaccess template, is there anything else that should be added or changed for added benefit or security?

# Defaults
ServerSignature Off
AddDefaultCharset UTF-8
DefaultLanguage en-US
SetEnv TZ Europe/Belgrade
SetEnv SERVER_ADMIN admin@domain.tld

# Rewrites
Options +FollowSymLinks 
RewriteEngine On
RewriteBase /

# Redirect to WWW
RewriteCond %{HTTP_HOST} ^serpentineseo.com
RewriteRule (.*) http://www.serpentineseo.com/$1 [R=301,L]

#Redirect index to root
RewriteCond %{THE_REQUEST} ^[A-Z]{3,9}\ /.*index\.html\ HTTP/
RewriteRule ^(.*)index\.html$ /$1 [R=301,L]

# Cache media files:
# Month
<filesMatch "\.(gif|jpg|jpeg|png|ico|swf|js)$">
Header set Cache-Control "max-age=2592000, public"
</filesMatch>

# Week
<FilesMatch "\.(css|pdf)$">
Header set Cache-Control "max-age=604800"
</FilesMatch>

# 10 Min
<FilesMatch "\.(html|htm|txt)$">
Header set Cache-Control "max-age=600"
</FilesMatch>

# Don't Cache
<FilesMatch "\.(pl|php|cgi|spl|scgi|fcgi)$">
Header unset Cache-Control
</FilesMatch>

# Prevent hotlinking
RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^http://(www\.)?serpentineseo.com/.*$ [NC]
RewriteRule \.(gif|jpg)$ http://www.serpentineseo.com/images/angryman.png [R,L]

# Error Documents
ErrorDocument 206 /error/206.html
ErrorDocument 401 /error/401.html
ErrorDocument 403 /error/403.html
ErrorDocument 404 /error/404.html
ErrorDocument 500 /error/500.html

# Deny access to .htaccess
<Files .htaccess>
order allow,deny
deny from all
</Files>

Code (markup):

 

maybe just to prevent people from browsing your folders & files in folders where you don't have an index.html or default.html or whatever:

Options -Indexes

Code (markup):

 

should i place .htaccess containing that code to every folder i want to restrict from being browsed or just put it in main on in website root?