is this mod rewrite properly done?

I did a mod rewrite code. I do not know if it is the right way to do.
it works perfect but can somebody check if it is done properly?

RewriteRule (.*)/index-(.*)\.htm$   search.php?q=$1&s=$2 [QSA,L]
RewriteRule (.*)/index(.*)\.htm$   search.php?q=$1 [QSA,L]

Code (markup):

output is

search.php?q=xxxxx             xxxxx/index.htm
search.php?q=xxxxx&s=40        xxxxx/index-40.htm

Code (markup):

Thanks

 

Yeah, it's fine.