Playing up is great advice and your girls will get better...or they will quit.
Know your coaching staff and their limitations. If they are not able to nurture learning, you will get pounded mercilessly and the coach will either beat the girls into submission, or worse, not push them at all and let them think the losing is acceptable.
Trust me on this one, we took and "very good" group of rec girls and played in several A tourneys at 14u...really took our lumps at times, and I was in over my head coaching. I opened my ears to other coaches, pushed our girls in ways we were told to and this past year was an ENORMOUS improvement! Did not win any tourneys, but won our pool, lots of games in several tourneys, including A tourneys.
What age group is this?