Read this order
Coffin → Sun: Relief after a difficult ending, or a pause that clears the way for renewed energy. The closure is still part of the reading.
What changes in reverse?
Sun → Coffin: A successful or energetic phase comes to a halt. Something promising may finish, or a period of activity may need rest.
Sun → Coffin ↗A practical example
After finishing a tiring project, someone may feel relief and renewed energy: Coffin + Sun. A lively project reaching its planned end instead fits Sun + Coffin. The difference is where the example begins, not a simple good-versus-bad label.
Check it against your question
Keep the actual order and ask which part of the example fits your situation. An example illustrates a possible reading; it does not establish facts or promise an outcome.
The meanings behind the pair
Coffin: Coffin marks an ending, closure, exhaustion or a standstill. Some situations finish; others need a pause before anything can continue.
Sun: Sun brings success, vitality, confidence and visibility. It is a favorable influence that can brighten or strengthen the surrounding cards.
These examples show possible ways to read the pair. Your question and the other cards may change the meaning.