How to draw a realistic bug
My process Here is the reference: https://inaturalist-open-data.s3.amazonaws.com/photos/46604638/original.jpg Step 1: Outline the basic shapes. This will give you a first pass at the proportions, but it may still need refinement.
Step 2: Add more detail, refine the shapes. This is a good time to make sure your measurements are correct. It helps to draw triangles or quadrilaterals between the legs to make sure the negative space matches the positive space, so the proportions will be correct.
I'm not sure I can really count the antennae segments from this picture, so if I wanted it to be super accurate, I'd look at another reference for that. Since this is a tutorial, I won't.
Step 3: Add outlines and more detail. This is your chance to catch details you didn't notice before, like that spike it has on its thorax, and the fuzz on its legs.
Step 4: Add inner detail. It's at this point you can decide whether you want to color it or stick to ink. Since this is a mostly gray bug, I just stuck to ink.
Keep in mind when shading large areas that the direction of your lines says a lot about the underlying form and texture. Try to make sure you don't just color in a random direction but try to match the textures/grain/fuzz that's in the reference.
Step 5: Final cleanup. I've gone ahead and erased all the pencil lines that were there. It's done!
Optional step 6: add lineweights. I didn't do this this time, but if you want to make your figure pop out from the background even more, go over the outer outlines of each part with a thicker ink pen.