Mike, this is a clever decision to choose Kommando Nowotny jets. This provides you with a bunch of interesting multi-camoed Me 262s to fill your EAW squadron. Especially because many Kdo.Nowotny jets flew until the end of the war with unchanged camo, still showing the yellow fuselage band, but being part of EJG 2, JG 7 or even JV 44. Just have a look at Me 262s from that units showing their tactical numbers on their noses...
The Me 262 3dz is a bit screwed up, indeed and the paneling is wrong, especially the parts surrounding the gun troughs in the fuselage nose. The machine cannon access hatches are way too small.
Concerning the black vertical bar of "White 4"; this is not a tactical marking, but a strip of tape covering the gaping slot between fuselage and tail unit. The tail unit was manufactured by Messerschmitt subcontractors so the parts didn´t fit very well in the final days of WW2. The tape was covered with camopaint which looked darker on the fabric than on the surrounding metal. So the "bar" ought to be a dark green and reaching from fuselage top left to fuselage top right omitting the tailfin and changing to a darker lightblue on the bottom of the fuselage.
Tha tail units with the characteristic sharp-edged blotches had been made from wood in furniture factories and were tested on Kdo. Nowotny jets instead of the aluminum tail units mostly used on other Me 262s. Those blotches had been applied with stencils because the furniture factories did not use spray guns.
I´m looking forward to rest of the gang