Hi, Dal, I'm glad you liked the tutorials. The best way to kkep the blank space to a minimum is to set the frame size to the dimensions you want, and turn off Fit-to-width in the Font size field on the top bar. The max pt size you can set is 288pt, which may not be large enough to fill your frame properly, so if you then type CTRL-A, every object will be selected, and the Font size box will now show either a percentage, usually 100%, or a blank, which would mean you had set a specific size on one or some objects in your image already.

You can set this to a max of 400%, or whatever you need to make the image fit the frame. The downside to this is that it applies only to the X- and Y-dimensions, not the Z-dimension, so while objects become much larger, their thickness stays the same, as that is set by the Extrusion depth. The objects will appear thinner. So you will almost certainly need to increase the extrusions used in the objects in your image, and also adjust any textures.

If you have used sizing pixels, you can ensure that they are outside the frame and so they will be cropped off automatically when you export the image.

When exporting, set the option tin the Export dialogue to Current window size, and untick Crop, then export.

Mike