This guide is excellent…
You have a start but with flaws.
http://forum.mikrotik.com/t/using-routeros-to-vlan-your-network/126489/1
If will guide you setup your vlans properly on the bridge.
The only services that you should need are winbox and possibly SSH, the rest I would disable.
When you are ready for a review of your next attempt, post complete config.
/export hide-sensitive file=anynameyouwish