Question about sketch cards, and i need opinions

[BAZINGA0212]

hey everyone, doing my first ever sketch card which i am almost done with.
have to draw the mouth, than shade it.



What do you guys think so far, or any tips/pointers you have.


Also what is something I could coat these with so that they rub right off?

and what is good selling prices?

[StainLss]

I like it dude! You should post a finished pic when you're done! Here is something I have personally never used but when I start sketching again I'm going to try it. I have heard good things.. but again never used it myself.. i would test of a stick figure card first you did a nice job on the Rogers!

http://www.krylon.com/products/workable_fixatif/

[BAZINGA0212]

Thanks a ton, really appreciate it! I just have problems with shading..

[BAZINGA0212]

And thanks I may try and find a bottle on ebay