That underside is really taking shape, Ernest.
On my 109's I have been trying to master oil streaking coming back from the lower cowling. But helpful pics are so hard t find. This Ungarnische 109 hints at it:
While this Emil which has the misfortune to be wearing roundels may be a bit too extreme...perhaps a Luftwaffe ground crew would wipe away some streaking occasionally :
But unfortunately my skills have yet to produce a good outcome. My hands aren't steady enough to paint straight streaks.
Keep up the great work!