ZBrushCentral

Adding textures to imported model

Hello everyone,
I am very new to zbrush and fairly intimidated but im slowly learning figured the next best thing to do is sign up here with the perfectionals.
Anyways is there a way to add textures to a flat model?
Here is the pic i was able to make a stl out of the outline
https://i269.photobucket.com/albums/jj51/wldtimes/zbrush/Untitled_1.jpg

The model imported to zbrush
https://i269.photobucket.com/albums/jj51/wldtimes/zbrush/Untitled.jpg
Im trying to copy the look of the feathers in the pic if possible but it wont let me change or add anything to the flat surface?
Thanks for any and all help

Do you mean the model won’t respond to any sculpting? Make sure your tool is in edit mode, the proper subtool has been selected, and that any masking has been cleared (tool> masking> clear).

If you’re new to Zbrush, reading the entire Basic Concepts section of the documentation may save you some trips back to the forums.