Anyways, here's some liveries I've made over the past few weeks:
For the 737-700:
An improved Southwest Canyon Blue livery:

http://www.fedtrek.com/staff/omega13a/SWA.zip
Southwest's 2000th 737 Next Generation livery:

http://www.fedtrek.com/staff/omega13a/N248WN.zip
Southwest's 35th Anniversary livery:

http://www.fedtrek.com/staff/omega13a/N238WN.zip
Southwest's 500th 737:

http://www.fedtrek.com/staff/omega13a/N281WN.zip
Southwest's Arizona One:

http://www.fedtrek.com/staff/omega13a/N955WN.zip
Southwest's Retro Livery:

http://www.fedtrek.com/staff/omega13a/N955WN.zip
For the 737-800:
Air India Express' VT-AXD:


http://www.fedtrek.com/staff/omega13a/VT-AXD.zip
Air India Express' VT-AXE:


http://www.fedtrek.com/staff/omega13a/VT-AXE.zip
For the 737-900:
United Airlines' Continental Retro livery:

http://www.fedtrek.com/staff/omega13a/N75435.zip
Alaska Airlines' More to Love livery:

http://www.fedtrek.com/staff/omega13a/N493AS.zip