Unica, I admire your determination :) I'd like to make a few points if I may?
In terms of rates, I agree the €40~€45 per hour would be a standard rate for experienced art nude models. However, for these rates, as a photographer I would expect a model that has demonstrated considerable skills and experience in this genre over a long period of time. For a model starting out, such as your self, with no examples of art nude photos, its a crazy price to set!
Whilst quoting an hourly rate is fine, as a photographer, I would certainly expect a discount for shooting up to a 1/2 day and an even bigger one for offering a full days shoot. Quoting a per hourly rate is not the way to go here (in my opinion)
I'm definitely of the opinion that if a model is paid for a shoot, they should not expect and definitely not ask for photos too! Especially when it is clearly stated in the original post.
When you couple all of these together (high rates, no experience, no discount for full days booking and asking for pictures) it definitely gives off the wrong impression.
Perhaps it's due to you being new that you have asked for all of the above (although your profile states you're experienced even though you only have images from one shoot??)? If you are new to modelling and weren't aware of the above, then I apologise for being quite blunt in my reply.However, if you are an experienced model, then I believe you should know better?