I've always found that i have trouble slowing down the pacing during scenes that need it moderately. I've barely succeeded at it once with a deeply shocking event, but then it took a nose dive from there. People have been saying to shorten my sentences and sprinkle in some descriptions, depending on what kind of scene I'm writing. But the problem arises when it comes to what I should be describing. Sometimes I add too many sentences that make the pacing too slow for what is currently happening. And most of the time, I speed through without giving anyone a single moment to process anything.
For sudden scenes, my mind automatically goes for "Suddenly". I usually avoid it and try not to use it too much. Then i use a single short sentence to introduce that sudden action and go off from there. But it always seems too light for my tastes, like it holds no weight.
If anyone can help, that'd be great