Hi
Im skiled artist and can very well do this job.
Not childish looking means it is somewhere semi-realistic or realistic digitally painted drawing?
design for coffee mug?, i can give a number of rough sketches ideas before finalizing any artwork
for the design if you want, so you can have better choices in seeing what you really want on your final design.
Pls. check profile and portfolio for sample and previous work.
My bid is 30$ each, is this ok to you?
Best Regards
art, :)