Hello all!

I am a graphic designer, that also enjoy to illustrate, animation, sculpting (from paper to clay) and music. Five times I have been invited to give (voluntary work) a workshop to children between 6-9 yo, and I have covered from animation, to paper sculpture.
Well, this autmn I am thinking on starting my own Art workshops, once a month. I am looking for some advice, on how to set this up, if someone here have done something similar?
As I love puppets, my first workshop will be about making marionettes with used materials. Simple ones, but very nice ones. I will have no more than 10 kids per workshop, and it will last two hours, with a break in the middle. I will provide materials, and some fruits and juice to the kids. My workshops are about ART, is not (ummmm) handcrafts. I allways give an introduction, talk about color technic, material use, and add music that is somehow related to the theme. I am aming to kids between 8-10 yo, because believe it or not, much of them still have problems using the sissors! (how sad...)
Budgets... I know that as it is my first workshop, I will proably loose some money, because I have not basic materials from before (like a bunch of sissors, glue bottles, brushes and so on). But the material related to each of my workshops, is used (used card boxes, used paper, pastic bottles, and much more). I love to go to the local reclycling shop to buy the wierdest stuff, for very little money.
I am also a mother of 4 under age kiddos, so I want the parents of my future students to think the prices for my workshops are very affordable. I am thinking of $15 per kid.
SO..... What do you think? Is this real, or I am dreaming?
I spent a LOT of times preparing each workshop, but eventually, when I repeat the theme, then the work is allready done, you know what I mean...
Thanks for ALL advices you can give, very much appreciated!
Ahhh, I live in Norway, so here I dont need a special insurance to hold such an activity on my own fascilities.
