How can I check whether the main shapes in my drawing are the right size relative to each other?
Quick answer
Before adding details, compare the largest shapes with one another in your subject and drawing. Choose one shape as an anchor, then check each other shape’s size and position against it. Look at the overall silhouette and the spaces between shapes, not just their outlines. If something feels off, adjust the big shapes first, then repeat the comparison before continuing.
The question, the details, the next step.
A practical checklist
Reduce the subject and drawing to their largest visible shapes.
Choose one shape as an anchor and compare other shapes with it.
Check both apparent size and placement, not size alone.
Compare the overall silhouette and the empty spaces between shapes.
Revise the clearest mismatch, then recheck the whole group before adding detail.
A few more useful answers
Should I fix every shape that looks a little different?
Start with the mismatch that most changes the overall silhouette or the relationship between major parts. Recheck after that adjustment; some smaller concerns may become less noticeable.
What if I do not have the subject in front of me?
You can compare the shapes already in your drawing with one another and check their silhouette and gaps. Without the subject to observe, though, you cannot reliably confirm that those relationships match it.
When should I start adding details?
Start when the main shapes and their placement feel coherent enough for your purpose. You can still return to them later, but checking first helps prevent details from distracting you from larger proportion changes.
