I used to laboriously sieve my home made compost to make it really fine for sowing seeds in modules.
It took ages and I’ve discovered that it’s a complete waste of time!
Seedlings love a bit of rough to get their tiny roots into.
So now I use a mushroom tray to sieve out the really large undecomposed lumps in my compost but let the other stuff through.It takes seconds rather than a few minutes.
It also improves drainage and my winter salad seedlings like the frilly mustards below, seem to love it, brandling worms and all.