Sure no problem :)

A main idea behind competitions are prizes, don't know if you have that? But that could make people more interested. If that is outside your budget, you could always try to contact some shops, like artistic bookstores, maybe some that sell pencils, brushes or whatever that could be relevant for people on your site and ask if they would be interested in offering a prize against some free promotion on your site, it could be a good idea for them as well, to get people from your site to maybe shop with them for a very low cost, I mean if its a book for instant and they get introduced to maybe 500 potential customers, it only requires one person to buy something from them and they have made a good deal. Also they are just as desperate for new "members" as you are. Anyway might be worth considering and it will not cost you anything and if you are lucky you could get them to make a link to you. :D