Putting letters onto a kit.

Yea, only problem is my local hobby shop has nothing

Look in the model railroad section of the LHS for dry tranfser commercial signs & logos.  Dry transfers beat waterslide hands-down for ease of application and look just as good.  I use dry transfer lettering for aircraft squadron codes, unit bumper markings, pilot names on canopy rails, names on gun tubes, etc... Can't beat 'em with a stick...   

Thanks I'll look into it. 

before I go out and buy dry transfer decals I would rather just buy a clear waterslie priting paper and make a decal for it.

that.

Also at the same store you should be able to find drafting templates that will replicate the exact oval or square you are seeking. 

Perhaps consider using rub-down lettering (Dry transfers). These are available in just about any size and typeface  you can imagine.

The oval outline... Cut a thin sheet of plastic into an oval and use it as a stencil.