What am I doing wrong I agree with you Fred, " Do not give up " . I find the old saying , walk away and come back to it later, does actually work. You may want to try cutting the vinyl on the bias ( the same as bias binding) This will allow the the stretch of the vinyl to mold itself around the panel. Steam helps also. Apply the glue and let it set up ,steam the vinyl as you stretch around , hit it again with a light coat of glue and attach. This is what is so unique to our industry that there are various methods to complete a project.