Model a character from Sketchs with parting lines and deliver Negatives in .STL format for Molding

Looking to produce aluminum injection molds for plastic 1 inch custom toy soldier miniatures (like the little green army men from toy story) to be used in displays for exhibits and some for kids to play with. We have a sketch of a character in a pose (attached) with feature details that need to be simplified and made into something like little green army soldiers (example attached). It is very important that the individual making the model/sculpt does so keeping a mold parting line in mind so that that model can be easily split into a two part mold (with no overhang) and be used for a benchtop injection molder. We also would like the one who creates the model to generate two sided negatives of the character along the parting line which is then sent to us in .STL so we can use it to machine a mold. In summary: Take a sketch and create a model of the character around a parting line Generate two negatives along the parting line Deliver the .STL of the negatives and the Character Model Assist in modifying the negative and parting line until we are able to machine it successfully and create a test injected part with the mold If this is something you are interested in or have the skills for please message back so we can discuss further! Thank you for reading!