what should seeds look like at 3 weeks in the agar jars

[orchiddream]

please can someone tell me what the seeds look like at 3 weeks as mine don't seem to be doing much. when I put them in there jars I put clingfilm around the lids, put the jars in a sealed clear bag with a bleach solution and put those in a heated propergation unit. I cant see much happening... what should happen at 3 weeks and what should they look like, thanks