If I want to observe a small insect top, bottom, side, etc.; I chill it until it stops moving. I put the gently captured critter in a little cold dish (usually, jar lid in my case, though a Petri dish would be ideal) until it stops moving. Before it chills, while it is still active to climb out, I have a clear lid (left over from a spice jar*) I put over it.
Once it is chilled and stilled, I can take a pine needle (or tooth pick) to turn it over and look at it from different angles. I don’t use a good enough camera to really get good photos, but at least I can see the different sides for myself to learn a bit.
https://www.inaturalist.org/observations/67217938
https://www.inaturalist.org/observations/57704266
https://www.inaturalist.org/observations/52892895
I just put a cold pack* from the freezer on the table and put the dish on it to get cold. I usually put a piece of paper towel in the dish to absorb condensation.
When I’m done, I let it go and it usually warms up enough to recover and crawl off in a few minutes.
*mine was a left over, but you can buy clear lids or Petri dishes.
**Pain Cakes are handy as they have a sticky side that holds the dish in place.