I glue baste all my larger projects. I dont water the glue down. I tape the batting to the floor, lay the quilt top on top and smooth it all out. Pull back half of the top and lightly drizzle the glue on very thin...you dont need much. If you get a clump, be sure to spread it out with your finger. Reposition top and, smooth out, and use an iron to heat set. Repeat for other half. Do the same process for the backing...tape batting piece to the floor and lay the backing on top.