I think this is posted in the wrong section--it looks like a card idea, whereupon you want the parent thread to this one. Card ideas just go in the general "Card ideas and art" board. This is the art subsection.
As far as the table goes, you'll want to use these links to the image so you get the full image and not the thumbnail:
http://imageplay.net/img/m7Gbd85436/necromancer.png (unupped) and
http://imageplay.net/img/m7Gbd85435/Lich.png (upped)
You'll also need to get the
icon on the card before it goes to the crucible. MSpaint or pixlr can both be good for that. (here's the link to pixlr if you want it
http://www.pixlr.com/editor/)
Kudos on making your own art. It looks like the drawing didn't scan super well but it's definitely good enough for the crucible. What I'd recommend is when/if the card starts advancing you can start cleaning the image up with pixlr or similar software.
If you need help with pixlr, generally I've found the community to be pretty supportive as long as they can see you're putting a real effort in.
The card suggestion process is always confusing at first, it'll start coming together soon.
As to the card, it might be a little strong in it's present state. Being able to easily swarm venomous creatures is a pretty huge ability. Maybe boost the ability cost or make it only affect 1 skeleton at a time?