It is not so much the size of the block that you are looking at when deciding what size to cut, you can do them any size that you want, I judge it by the print and what I want to show when the block is together, the smaller the print or pattern, the smaller the block, I have done ones as small as 1 3/4, to I think 4, though I have seen some that are cut bigger, this one was cut at 3 but you take some of it off for seams, I use my super 60 ruler to help decide on that, I put it on the fabric and sort of move it around to see what will show, it shows the 1/4 in seam allowance so I can pretty much picture what will be showing. since there will be pieces from all over, you can just slide it around. With the landscape, I wanted to keep certain colors with certain colors so that is why it was cut so small, if the print had been bigger I could have cut bigger pieces.
I just measured and one that I cut at 1 3/4 inches was sewn to make a 2" block, so it is tiny, I think I will have to take a look to see if you just have to take 1 1/2 inches off of the combined measurement.
Any one that wants I can help spit ball what to do if I see the print,
we found that If I laid it out and then took a picture and then you can stand back and see what is up easier than looking at it in person. it gave a better view, I printed it off and we looked at it and moved things around then took another picture to see what else needed to be done.