Where can I look for Custom Build Requests?

[Usive]

I want to do custom builds but don't Know the best way to go about getting requests.

[Rolig Loon]

It can be hard when you are just starting out, partly because you don't have a lot of previous work to show people and partly because advertising a service is inherently difficult.  You can try posting in the Inworld Employment section of the Commerce forum here >>> http://community.secondlife.com/t5/Inworld-Employment/bd-p/InworldEmployment or compose a good ad and list your services in Marketplace.  Generally, though, the best way is to build a lot of things either on spec or for friends and slowly let the word travel by word of mouth.  You will also find that there are several builders' groups in world that may be helpful.