jewelysmom- A blessingway is a Native American ceremony to help transition a mama from being pregnant to having her baby. You bless her way into birth. I had one for my second baby and have been to a couple. We call them Mother Blessings since "Blessingway" is assuming you'd be doing everything very accurately to the way of the Natives.
You can google it, and find great websites for ideas. Some common things have been mentioned. Basically, you want everyone there to focus energy on making the new mama-to-be feel loved and relaxed. Sharing stories of births, or how they met the mama, or poems or wishes, etc. Giving a foot rub. Doing a smudging. Doing a belly-casting.
Here's how mine went:
Everyone met at a semi-remote campsite along a river. Lots of mamas and kids. Everyone brought food for a brunch. Some mamas and kids found wildflowers to make a wreath for my head (at the time I had dreadlocks, so braiding hair was out of the question!), while other mamas made a belly & boobs cast. Took lots of pictures. Opened a couple presents that people had brought (tea from one mamas home-grown herbs, thrift store baby clothes, etc). Then we made a meal plan and schedule for visiting/helping (it was to be a scheduled cesarian, so I needed LOTS of help!). Then we just ate and talked and had fun. Nothing too ceremonial, but my friends really aren't that way, we'd rather just hang out and relax together

Then after the lil' bambino was born, a mama brought over the finished belly cast (finish with gesso) and a pretty photo album with pics from the Mother Blessing.
This is getting to be quite a long post, but one more thing...
for another mama's Mother Blessing, one mama took her to a day spa and she got the royal treatment (this was everyone's gift) and while she was doing that, all the other mamas went to her house and cleaned the HECK out of it. Painted rooms, refinished wood furniture, etc. etc. She was SO happy! It was all stuff her DH was too busy to do, but things that drove her crazy! And the papa had her older kids with him for the day. Then the mama went to pick her up, and we all went to a neighbors house and did a potluck and belly casting in her gardens. Also, we brought something to put in the mama's freezer for when baby was born!