htaccess help

[fine0023]

I was wondering if someone would be able to take a quick look at my htaccess code and see if there is anything incorrect or obviously done wrong. I'm a bit of a novice at this. You can contact me at slmkds (at) gmail.com
Thanks!

[g0dzuki99]

Or you could just post it...

[fine0023]

Good Idea:

Here is the code:

RewriteEngine on
RewriteBase /

RewriteRule ^(.+)\.shtml$ $1.html [R=301,L]

redirect 301 /games.html http://www.slimekids.com/games/
redirect 301 /trailers.html http://www.slimekids.com/book-trailers/
redirect 301 /authors.html http://www.slimekids.com/authors/
redirect 301 /reference.html http://www.slimekids.com/reference/
redirect 301 /reviews.html http://www.slimekids.com/book-reviews/
redirect 301 /searches.html http://www.slimekids.com/search-engines/

RewriteEngine on
RewriteBase /

#if the domain is not www.slimekids.com
RewriteCond %{HTTP_HOST} !^www\.slimekids\.com$ [NC]
#redirect to www.slimekids.com
RewriteRule ^(.*)$ http://www.slimekids.com/$1 [L,R=301]

#leave this rule in place, but after the one above to handle the home page
RewriteCond %{THE_REQUEST} ^[A-Z]{3,9}\ /index\.html\ HTTP/
RewriteRule ^index\.html$ http://www.slimekids.com/ [R=301,L]

ErrorDocument 404 /404page.html

## EXPIRES CACHING ##
<IfModule mod_expires.c>
ExpiresActive On
ExpiresByType image/jpg "access 1 year
ExpiresByType image/jpeg "access 1 year"
ExpiresByType image/gif "access 1 year"
ExpiresByType image/png "access 1 year"
ExpiresByType text/css "access 1 month"
ExpiresByType application/pdf "access 1 month"
ExpiresByType text/x-javascript "access 1 month"
ExpiresByType application/x-shockwave-flash "access 1 month"
ExpiresByType image/x-icon "access 1 year"
ExpiresDefault "access 2 days"
</IfModule>
## EXPIRES CACHING ##

(Do I need to put
"RewriteEngine on
RewriteBase /"
in there more than once?)