The mock that I am about to present is based off of the Draft Value Chart that Pro Football Weekly has posted on their site (http://www.profootballweekly.com/2012/04/06/pfws-exclusive-draft-value-chart-7) along with some of the player grades/ranks from National Football Post (http://www.nationalfootballpost.com/college_big_board_rankings.html&position=all). Here is some of the explanation of the PFW Chart:
The value board below is based on considerable feedback from NFL teams and projects the league value of players, pinpointing a specific area where players likely will be drafted. It is important to note that these values do not reflect where PFW thinks the players should be drafted or what type of pros they will become; that is better reflected in PFW's grades.
Based as close as possible on their chart and the Redskins needs, this is what I cam up with for this Mock (RGIII taken at #2 Overall is assumed). Identified positions of need (G, T, S, CB, MLB, WR, C - in no particular order). Center was left off due to selecting two OL already. Hopefully you can follow the draft value chart and the player rankings and follow the logic/reasoning behind the selections.
Round #3 - Casey Hayward
Round #4 - Markelle Martin
Round #4 - Adam Gettis
Round #5 - Nate Potter
Round #6 - Juron Criner
Round #7 - Tank Carder (slight stretch based on the chart)