This project is old, made when I had no clue about making headpieces or comics, so bare with me! I've hosted this tutorial on my site (and finally got around to joining Instructables and bringing it here) so clunky and badly drawn as it is, with its inclusion of personal ramblings and bad font choice, I do know that it has helped others in making an Asari headpiece.
The headpiece took I think about 2 months, off and on - that included getting all the supplies, which ended up being the longest part. You could do it within a couple of days if you don't have supply issues (and are experienced!) I would allow, minimum, two weeks for this project if you are/were a noob like me. If you're one of those special effects pros who might complain I'm too generous in the time I give for stuff to dry, this isn't Face Off here. It's "Firsttimedoinganythinglikethisletsseeifwecanpullthis Off"
Step 1: "Mini" materials list
Step 2: Making a Head Mold
Step 3: Making an Armature (Using the Head Mold)
Step 4: Sculpting a Headpiece
Step 5: Making a Mold of a Sculpted Headpiece
Step 6: Making (and painting) the Latex Headpiece
Step 7: Wearing it!
(Step 8: Final Notes)
Click on the pictures (on the little 'i' in the top left corner) to get to a bigger image, so you can read the full instructions within the comic! The comics need to be big, sorry; I found the text hard to read when I scaled the pages down so I tried to make them as small as possible without sacrificing readability.
If you have any questions, or are unclear about anything at all, please don't hesitate to ask!
*Bonus! This Instrucables has a few differences from the one on my site - including a never-before-seen makeup-test image that I decided to start this project off with!*