looks a little extra oily and has a strange looking marks on the piston the two brown spots.
your head almost looks like its been taped by the piston (right side of the head) at the top of the stroke but hard to really tell as I don't see a corresponding marks on the piston at least I can't tell for sure looks strange on the lower right side of the piston at the 3:00 to 5:00 spot or it could be the top ring I'm seeing.
Why do you ask?
Looks OK for the break in period, should be rich. Those spots on the piston are where the Scavenging ports are in line with, and as the blast of mixture comes out it washes the piston off. That should be a good spark plug NGK, and I like that heat range. Have fun, Dave