asheira:
I’m thinking of making my own lammassu, but unfortunately I’m not sure where to start. I was thinking of using the great stag model I have that I never ended up using, but what should i use to make the head?
Hashut’s Blessing:
You can start with a giant/ogre head as a base, then use greenstuff for beard and hair/horns etc.
asheira:
what’s you opinion of the raging heroes manticore with Shedu/Sphinx head?
bigdark:
I think the Beastmen Ghorgon/Cygor box would be a great starting point - and then add any boxed wings Chaos Manticore, Dragons, etc.
The Ghorgon is ginormous and looks the part, horns & whatnot.
Quick shift in posture and you’ve got yourself a ride-a-bull. You would need to replace the front hands with hooves though.
Zanko:
what's you opinion of the raging heroes manticore with Shedu/Sphinx head?If you want to use the Raging Heroes Shedu-head, then you can buy the complete model! It's a great one which needs no more conversion work imo!
asheira
But if you want to create your own unique model then you should use another cheaper basis for your conversion!
:hashut
Skink:
…I can’t find Xander’s post anymore but he made a fantabulous model out of GW’s plastic Manticore.
Edit: here you go.
Sherlocko:
Slap some wings on this fellow and you´ll have a pretty unique Lammasu! 
MIERCE MINIATURES - Flint-Fang, Kill-Thing of the Infernal Pits
cornixt:
The definition of lammasu seems to be getting pretty broad these days!
asheira:
Thank you guys for your ideas/advice!
Goltor Lintrepide:
Slap some wings on this fellow and you´ll have a pretty unique Lammasu! :)Could also make a perfect dwarf warrior or even an awesome Hydra! ;P
http://www.mierce-miniatures.com/index.php?act=pro&pre=mrm_dkl_vrs_tcw_mbs_801_000
Sherlocko