times but that happens.what the trouble was when I took it off the machine and looked at the back the top thread had come to the back and was all gobbed up. I put in a new needle ,cleaned out the bobbin track and tried again but the same thing happened. I adjusted the tension but wasn't sure to tighten or loosen.I am sure some of you can help m with this problem. thanks in advance for any help.

I am too new to embroidering myself to help you out, but glad some of the others have given suggestions. Welcome to cute!

Often, when I find a gob or nest of the top thread, it is due to stitching a very dense design using the wrong stablilizer for the fabric. Also, it has happened when the bobbin thread was not unwinding in the proper direction towards the groove near the needle plate. When the bobbin thread is not making proper connection with the top thread, the top thread starts going underneath into a nest. Too much glue from sticky stablilizer can do this, too, as well as upper thread breakage.
Angel
Angel

With the Janome, slow it down to 400, use a Janome blue tip 11 needle and have your tension on 2.
If you still have a problem you may have some thread caught in the tension discs.

I might try another thread, or try to sew it out on a piece of felt. Make sure the bobbin is in correctly and the top is rethreaded. More likely the top thread is the problem since it's looping on the bottom.
Jo