Hi! my name is Kujtim and have over 4 years experience as a 3d character and concept artist in a movie company and i did this kin of characters before ,and i believe i can help with the artwork,and even if you dont have all of the sketches it is not a problem for me i can work with one basic drawing rest i can come up with form the 1 sketch,
however not sure if you need it for animation or just a model as a bust for printing,
if you need it for animation more time a week or 2 is needet for retopology to make it animation frendly,and the price its 250,for medium quality
but without retopology just sculpted it will probably take me 3 of 4 days,price its 150,medium quality,
Thank you best regards,