Found your piece through kaymarierose's favourites and I'm very impressed! Nice to see in the midst of doing something practical, it also looks like you've also placed her at a location integral to her story which is doubly nice although I could be wrong! Looks like where she goes to find Oriana in ME3. Aside from that it *looks* like Miranda so very well done there, and it's very realistic!
As a side note I admin a small Facebook page called Mass Effect Miranda Lawson. Would you mind if I posted your picture to one of the page's albums? I'd include reference to you as artist and a link back to your original here.