@notabagel, sorry I forgot to welcome you to CCF previously.

There is a whole section elsewhere on the site that is devoted to numismatic picture-taking. I suggest lurking there a little to pick up some tips. If your camera pics were in focus and cropped, they would be fine. Maybe not good enough to put into a magazine, but certainly fine for the purpose of determining an attribution.
For your Dutch coin, I think that my first thought was right.
"If you climb a good tree, you get a push."
-----Ghanaian proverb
"The danger we all now face is distinguishing between what is authentic and what is performed."
-----King Adz