FarmVille Crop Mastery Billboard Complete Guide ~ THEGAMETECH

Now you can store your mastery signs from fruits vegetables, grains, and flowers in FarmVille's newest feature, Crop Mastery Billboard. Store your signs to make room on your farm. If you master more crops you will help in making your bull board look even better. You can increase your storage capacity by adding more parts.

Place the Crop Mastery Billboard on your farm and start collecting the following items to complete it:

Light Plywood (for stages 1-3)
White Overalls (for stages 1-3)
Black Light (for stages 1-3)

Crop Mastery Billboard Interface

Crops - See the list of crops you have mastered
Expand - Monitor how close you are to expanding to the next stage

Notes:

Click ‘Move’ to drag your mastery signs that are currently on your farm to the Crop Mastery Billboard.
Click ‘Use’ on your mastery signs that are in your Gift Box and drag them to the Crop Mastery Billboard.
Cursor over any Crop Masteries and click on ‘Remove’ if you want to place your signs outside of the Billboard. You will be able to put them back in the Billboard if you still have the capacity.

Upgrading Your Crop Mastery Billboard:

Once you fulfilled the number of masteries requires & once you collect more Materials, you can upgrade the storage capacity of the Crap Mastery Billboard.
There are 6 stages to upgrade your Crop Mastery Billboard and each stage gets even flashier.
The first 3 stages require the following parts: Light Plywood, White Overalls and Blacklight
The last 3 stages require 3 different parts: White Paper, Blue Roller and White Paste

Notes:

The number on the billboard shows the number of crops you have ever mastered, regardless if you deleted the signs from the past.
Players will be able to put multiple crop mastery billboards on a farm; they just cannot have more than one frame on a farm.
Players can put a billboard on each farm expansion as well.
This Billboard is only for crops. This feature does not store Mastery signs for Animals, and Trees.

via zynga forums