If you’re really looking to make money from this you should’ve made some samples specifically to show off. No one with a serious project is going to spend their time working with someone who has nothing but a promise and a price tag.
Also you could probably charge more (or possibly USD) if you had references or at least some kind of background. Think about the kind of things you’d look for if you were buying an ad from someone, then do those things.
I don’t need any ads made, but good luck!