Thanks for the encouraging words!
Do you have any recommendations as to where to put my filter (that tub shown in the pic)?
Are you planning a waterfall? Or is that for your bog? If it's a bog, you can put it wherever you want, but think about how you will view the pond. You really want your waterfall - or your bog outflow, in case you aren't planning a full on waterfall - facing you where you would most likely view from. Also plan for where your plumbing will run so you can easily conceal it. Honestly it looks fine right where it is in the photo, but I don't know what your whole layout looks like in your yard.