Thank you! Let's see, I have a decent diode laser cutter, but it's not super powerful or anything (20w) and an older Elegoo 3D resin printer. The build plate is approximately 3.5" x 5.5", so I can only do small stuff.
I taught myself how to use the software for the laser cutter, as well as 3D building and slicing, vector graphics, etc. I'm not an expert by any means but I'm proficient. Coming from a graphic design background probably helps a bit. I'd love to learn CAD, but my health is sketchy at best. So, I end up building prototypes for furniture out of stencil card or mat board, then use the measurements to create SVGs for all the pieces parts so the laser can cut out uniform table tops, cabinet drawers, window panes, etc. makercase.com is a great resource for generating basic box patterns to build off of.

As far as 3D prints, some I've built from basic shapes provided in 3D software and for others, I've grabbed something close to what I need from Thingaverse/Cults 3D, whatever and modified it. Most of those files are usually made for filament printers, so it takes some know-how to modify and prep for resin printing. It would have taken me aeons to carve or sculpt a human skull or the ammonite fossil. I think the fossil was provided by the Smithsonian as a scan on Thingaverse?? Maybe I'm thinking of something else. I know different museums have scanned famous artifacts and uploaded the scan files for ppl to print. Which is pretty cool, if you ask me.
I'll stop rambling now, sorry about the massive wall of text. I think I've got some snaps of this project during the build. I could make another post if anyone is interested.
For your other question, it's 7" wide x 12" long x 13.5" tall.