congrats on completing your first jam! :]
Please Stay is very beautiful and really pulls my heartstrings! lovely chord progressions. the mixing is better on Please stay, but Welcome is a bit muddier; maybe the trumpet chords are too thick; just lowering their volume/making them shorter/finding a lighter sound might help. but i absolutely love how it feels nostalgic and bittersweet, yet upbeat and colorful!
i think it'd be totally worth it to keep working on the rest of the tracks post-jam. great work overall!!!