Tweaking a character

Hi This is a small project. I have seen a character that I want to tweak. As its a copyrighted material I cannot use it directly. Have a look at the source psd (right side character): [login to view URL] Possible changes: 1. Add human like nose. 2. Change eye colors to brown 3. Add a cap 4. Do other modification so that it is not looking like this one. I want it to feel like a small detective like character. Give me your estimate . Regards PC