Choose a result you can check.
A drawing can look convincing and still have the wrong size or a tiny gap. Begin with a written target, separate from the drawing itself. For this original demo, imagine a flat rectangular outline intended to be 40 units wide and 25 units high.
The outline has four straight sides. Opposite sides match, adjacent sides meet at right angles, and the last corner joins the first. These are checks you can explain before you touch any software.
Check size, then shape.
Read the actual dimensions or geometry properties using the appropriate tools in your CAD application. Compare width with 40 and height with 25. A label typed as “40” is not independent proof that the measured width is 40.
Then inspect the corners and confirm that the outline is closed: the last corner must join the first without a gap. Zooming in helps you find a gap; it does not replace a geometric closure check.
Check what should stay unchanged.
After an edit, check the features you intended to keep. If you moved one edge, did the opposite edge remain in place? If the exercise requires flat geometry, a top view alone does not prove all elevations are zero.
Use a short record: target, observed result, pass or revise. A mismatch is useful information. Return to the relevant step and check again after the correction.
Save a result you can identify.
Follow the exercise’s saving instructions. When asked for a copy, use a distinct filename and keep the original. Record the filename and the checks you passed, so you can find the right version next time.
Download the blank practice log from Resources and use it to record one target and one measured result. The log contains no workbook answers.