Save complete packs instead of scattered images
A full pack gives you a predictable set of reactions in one style. It is easier to reuse than individual images saved across different places.
Choose packs with obvious moods
Look for stickers where the emotion is clear from the preview. This makes the pack easier to scan when you are replying quickly.
Keep your best packs focused
A pack for pets, a pack for memes, a pack for daily replies, and a pack for friend jokes is easier to manage than one mixed folder of everything.