Oil leak after seal replaced

[Dibbons]

Did my nephew err when he replaced my small block rear main seal and oil pan gasket? All I know is oil is leaking from the area where the transmission and engine meet. The oil pressure sensor area is dry, and the oil filter base was dripping but that gasket was replaced before I drove home (it was hard, crusty, and brittle). Took some fotos (see below) after I cleaned the area up a little. Later, I will fire up the motor and look for the drip source. The oil pan used the end seal gaskets that DO NOT have provisions (holes) for the six pull thru tabs. (The full gasket set I had included both types of oil pan end seals). Does anyone see anything wrong so far? Thank you.

Update:
Saturday, started the motor up cold and let it warm up at an idle for 20-30 minutes. Never actually saw any drips. After motor shut down, I did find one drop of oil fell on the paper towel I had under the suspected leak area. Yesterday (Friday), after a 10 mile, 20 minute drive, it was dripping.

 

[Dibbons]

Update:
Sunday, I let the motor idle again in the driveway for 20-30 minutes for a second time. No leaks

Monday, I drove 10 miles in 20 minutes at speeds from 25 MPH to 50 MPH. Motor dripping again like it was a few days ago, one drop about every 3 seconds or so. My nephew said bring it back next Tuesday.