How do I join a project?

You will be added to projects when you have at least one character from them.

How long will it take for my adoptable to be completed?

This depends on several factors, including profile completion (for the project), motivation, inspiration, and whether I feel I'm skilled enough to capture the design.  I strive to produce the best designs and art I can at any given moment, and sometimes this means there's a wait.  You can always check progress from your profile.

Can I help with art/code/rolls to make things a little faster?

Since I'm currently still figuring things out, I'm not at a point where I can confidently bring other people into the project.