You can go either way. I stacked pre-written elements together to come up with something that fit the space. But, I've drawn them from scratch also. I just used stock files to save time for this job. 3D designs can get labor intensive. And, it took about 10 hours to cut this once it was in the machine. Imagine the 3/16" ball nose cutter going back & fourth over this area, with a 12% step over. That's a LOT of G code. All I had to do was go over it with a scotchbrite pad a little and it was ready for stain. You can go faster, but then you give up detail & finish.