It sounds like there was too much pretreatment sprayed. There are ways of pretreating that you can eliminate this box that you see on the samples. For me it is lightly spraying distilled water on the garment before the pretreatment. Here is a good link that talks about pretreating, and some good tips for applying it
Little Fibers Sticking Up Off Shirt any fix?. If you get a machine, this thread will help you to learn the fine art of pretreating
