Well sparring wise, the opponent didnât do much back⊠Granted he was being overwhelmed a bit which is good, but itâs obvious they were all pulled punches, etc. Nothing wrong with that in a demo though.
In my opinion he didnât look bad (though I am no expert at all in WT) Some of the ground and pound looked okayâŠbut here is what I noticed.
(this is just what I do differently training ground and poundâŠnot that itâs better, etc..)
First, the control factor on the ground has to be the first priority. If you simply fall to the ground and start punching without making sure you have good control, the guy will get away. (No one wants to be punched on the ground)
When I train ground and pound, whether it be with a partner, sparring, or just using a grappling dummy, I always make sure to get position. I mount and pull the guyâs head off the ground towards me, hook his legs, headbutt and elbow numerous times. Downward elbows, etc. His elbowing didnât look bad. Looked pretty good to me, though the chain punching I donât do. When I punch from mount I try to put a lot of power in my punches and throw them the way Iâd throw boxing crosses, etc. I donât know about how damaging the chain punches would be in that position (since youâre not running forward) but Iâm sure some people can have power there if they train it. I just do it differently. 
While grappling on the ground, itâs important to work on control while striking as well. So when you drill or spar ground and pound, punch and elbow, etc. But make sure the guy tries to escape, so you can work your control. Thereâs a time to punch, and also a time to get better position so you wonât lose the opponent. Keep him under you.
Like Martial Joe said, a good wrestling background will do wonders for your ground and pound.
In a few years Iâm gonna be afraid of him! 
Ryu

Rimpleback Pumpernickle Kez Kez Vuy Tranh Yanagasawa Fujikage FistibunsâŠ
the lost son of the Fistibuns clanâŠ
âOne who takes pride in shallow knowledge or understanding is like a monkey who delights in adorning itself with garbage.â