From the code that you have shared, I see the issue with the use of variables "x_inset" and "y_inset". When using these indices to slice the image matrix "firstFrame" at the end, the first index should be for the y-coordinate as for a matrix it refers to the rows. Similarly, the second index should be for the x-coordinate refering the columns.
A simple fix to your code can be the following:
x_inset = round(poop.Position(2));
y_inset = round(poop.Position(1));
Update these lines of your code. If possible you can change the variable name accordingly so it is easier to reference it in the future.
