I am a mechanical designer and I am also an artistic ironworker. I would like to make drawings of tree leaves (oak, maple, vine...) by hand, scan them to sketch them in inventor or solidworks. And this in order to have them cut with a laser.
If I make them on the computer, I can't give them the same expression as by hand (and it's much longer on the computer).
I know that you can add an image to a sketch and go over it with curves. I intend to make a dozen of each kind of tree by hand so that I don't have the same ones when I make my sculptures, hence the interest that there is an image/sketch conversion. (I have attached a picture taken yesterday of a sheet of paper that I made by hand. It takes a lot of time to do, drawing on the sheet metal, cutting with plasma by hand, trimming the ends of the sheet, giving the shape with a hammer... I will remove a lot of tedious steps)
For 2D you have AutoCAD LT which you can try for 30 days.
This software will allow you to create schematics as you wish.
I have been using an XP-Pen Star 03 with Autocad lt and SketchUp for ± 4 months My interest, at the beginning, was therapeutic. The stylus doesn't work the same muscles as the mouse. The most important problem with a tablet is the lack of dynamic zoom (the one on the mouse wheel). So I installed a mouse on the left side of my keyboard. My left hand quickly got used to it.
Here are some observations:
° With Autocad: mouse on the left to zoom in and 1 pen button for the Pan, the other for the Right Click (context menu).
. With Sketchup: mouse on the left always close to zoom in and stylus button for "Orbit" and "Pan" (depending on whether you swipe by touching the tablet or hovering over it at ± 3mm from the surface). Very smooth. The drawn object is very easy to handle.
° The surface of the tablet should not be too large. With Autocad or Sketchup you have to use the tool icons often. The farther they are, the more tired the hand will be. It should be noted that the usable surface of the tablet can be reconfigured.
° Object input is more pleasant with a stylus. We prick a bit like with a small pair of pliers.
In the end, the only disadvantage, for the moment, seems to me to be the space that all these tools take up on my work table.