[Looking for Avatar Shape Tweaker]

I'm looking for someone capable of modifying avatar shapes so that they look more professional and real but not massively altering the appearance. Specifically, I'm interested in someone who can identify and correct amateur mistakes.

[Spec Double-Check]

I'm using a Linux laptop with these hardware specs:

OS: Fedora 18 (64-bit)

CPU: Intel® Core™ i5-3210M CPU @ 2.50GHz × 4

GPU: Intel® Ivybridge Mobile

Resolution: 1366x768

 

Is this sufficient for running SL Viewer?