Can someone check my Fischer Projections?

[JessG]

Homework Statement

1. R, 2-Bromo-2-Chlorobutane
2. S, NH2-CH-C2H5
...|
.....OH
......O
......||
3. R,R and R,S of CHDCl-C-CHDNH2

Homework Equations

...knowledge of fischer projections? I can post the video-tutorial i attempted to follow, if needed.

The Attempt at a Solution

1.
...CH3
..Cl--+--Br
...CH2CH3
2.
...H
..OH-+-NH2
...CH2CH3
3. R,R
...H
NH2-+--D
...|=O
...D-+-Cl
...H
R,S
...H
NH2-+--D
...|=O
...Cl-+-D
...H

 

[JessG]

I can draw them up on paint too.. if that's easier to decipher.