I am trying to FMQ some place mats and I am using one color in bobbin and another in top but the bobbin thread is coming to the top and showing.What am I doing wrong?

Try adjusting your tension... or try using the same colored thread if you can get your tension adjusted correctly :D:D:D

Which tension?Top or bottom?

check the machine manual to see which to adjust. sounds like the top tension is too tight.

Thanks I will and I love your avatar.

If the top stitching is too straight and bobbin thread is showing, that means the upper tensions is tighter than the bobbin tension so loosen the top tension.

If the loops of the top thread show up in the bottom and the bobbin thread is laying straight and tight, then the upper tensions is looser than the bottom so tighten the top tension.

if your bottom thread is showing on the top you need to either tighten the top tension or loosen the bottom tension...the key is finding that magic setting where the top and bottom are equal. if you match your bottom and top threads those spots do not show up so much, but finding the correct tension would be the best way to go.
it is always easier to adjust the top tension so start with that, turn it just a little at a time and stitch a few inches, check, adjust, until your stitches are the same on the top and bottom.

From one Texan to another,Thanks.