Help me with my wargames table?

My two doors have been sanded down to remove the old varnish and I've put black tape all the way round to try and stop damage.

Next comes the messy part. I'm going to use pva glue with sand and maybe plaster mixed in to give the surface some texture, but I don't know what kind of quantities I should use? Any advice?

Work in progress

Managed to base coat some archers.

And base coated this large Drider.

1980s citadel cleric

Whilst I was waiting for the undercoat of 30 more wood elf archers to dry, I quickly daubed some paint on this fellow - a 80's Citadel cleric, who will be entering my D&D 'City of the Drow' adventure tonight...

I'm not very good at painting 'light'. I'm going to attempt to add some light reflections at some point...

What's left...

I've been trying to sort out exactly what I have left to paint for my wood elves...

A quick muster of my command groups shows I'm missing a standard bearer...  Ebay time!

And a quick question for the citadel officionados - I bought a few of these boxes when Games Workshop where doing some sort of sale. You got 30 infantry or 10 cavalry for £10. It's why I've got so many Skarloc character figures. But what year would that have been? I think it was before plastics really came on the scene, so I'm wondering why GW had the sale?