Simple wordpress tweaks

Hello all,

I need a couple of tweaks into an wordpress theme.

Basicly I want to add a magnifying glass and a search form similar to this one:
http://no_url_shorteners/1dmBGeX

The intended result is:



I also need to insert an image of the accepted payment card in a bootm bar, something like this:


You can see the actual project in a test site here:
http://no_url_shorteners/MSI0pf

And for your reference, I'm using this Themeforest's theme:
http://themeforest.net/item/mana-responsive-multipurpose-theme/5895568

I need an well explained code/css since I could want to make some changes in the future.

Please send me your quote by PM.