4 down: I crack baseball side, well trimmed for online photo (9)
Awkward and bullshit in my book: I crack baseball side, well trimmed = me gap IX well – wl = megapixel = online photo.
A pixel is a little dot that gets coloured to portray an image. Get a whole bunch of them together coloured in a certain way and you have a photo.
The problem: Humans are a collection of atoms. Arrange them in the right way and you have a human. Nevertheless, if I saw human = atoms, I’d say bullshit, just as I say online photo = megapixel is bullshit too.
6 down: Flag emission source (7)
This one is flag = exhaust = emission source.
Not sure about whether flag = exhaust is bullshit or not, though. I think yes one minute, then no. Either way, it’s debatable.