There are 5 categories in the bottom.
In the middle, you will be able to see POST PROJECT option.
Click on that.
Then choose the option ART & Design.
After that Post a project.
then click on 3d modeling
After that the budget option will come.
Hello i'm an Italian Designer with civil engineering studies and 10 years of experience in constructions and design in 2D, 3D and renderings.
I will be Glad to Help you in your Project .
Many Thanks.
Regards
Alessandro