Hi Beanie,
Looking at your pic, all I can see that isn't a 'default' skin is the chequered flag?...and possibly the Fuselage cross and Fuselage skin?
Are you trying to decrease the size of the chequered flag?..if so, that is just the 'scale' command.
It may be worth you having a quick look at some basic photoshop techniques on youtube? (I learned all the basics there)
Just type in "Basic Photoshop Tuitorial" into youtube, grab a pen and some paper (and a Coffee) and have a watch..make notes as you go...though there is nothing much on there specifically for skinning Albatross's!! you will however, find some useful pointers that can be adapted for use in skinning.
I am working as we speak on the mini tuitorial, but don't get downhearted, it's quite a learning curve, and I think you are almost there!..just need a bit more info I reckon!!
Good Luck m8, and please keep asking questions, it's the best way to crack it!