Practice Series - Kate Beckinsale

IMPORTANT: I traced the outline of this drawing because this is my first time using photoshop ever and I wanted to start painting straight away. I take the integrity of artworks very seriously and hence, this declaration. Therefore, please do not judge the work based on the resemblance, but only on the painting since the outline was traced.

About my digital art: [link]
TLDR: I know nothing about photoshop and I intend to keep it that way so as to prevent myself from using shortcuts that the software provide

Okay, first time using Photoshop. Not as hard as I've thought. This is the first piece in my Practice Series, which are artworks whose outline are traced so as to cut down the time of each work. I will resume my normal drawing, ie no tracing, after a couple of works to familiarize myself with digital painting.

Stats:
-Photoshop CS5
-Wacom Bamboo Small
-Original size: 2400x1800
-Tools (strictly): 2 default brushes, color swatches, undo and a few layers.
-About 25-30 hours
-Reference: [link]
-Animation:
-WIPs:
Hope you guys like it and I welcome any critique