Smooth down the edges of your tape/stencil/sticker with your fingernail.

Be careful not to sand over any areas that you masked off, otherwise you might end up with a fuzzy line.

You should do this even if you cannot wash the item. There is not enough rubbing alcohol to damage the item.

If you are covering the entire item with glitter, consider coating just half of it with glue for now. This way, you’ll have something dry to hold on to. If you are covering a plastic cup, stick your hand into the cup. This way, you can coat all of the sides without getting your hands dirty. You can also try using regular white school glue or even acrylic craft paint. Keep in mind that you won’t be able to apply a second layer with paint, or you will dull the glitter.

Extra-fine glitter will look more professional, but you can use the standard chunky kind too.

You can use a different type of glitter to create an interesting texture. For example, if you used chunky glitter at first, you can use extra-fine glitter this time. Do not add a second layer if you used paint, or you will dull the glitter down.

If your are applying glitter to just 1 side, you can skip this step and move onto the next one.

Use a dry paintbrush to brush any stray bits of glitter from the un-glittered parts of your item.

If you masked off any areas previously, extend the sealer just past the glittered edges. This will seal the glitter onto the item and prevent flaking.

Do not use the item before it has finished curing. It may turn sticky, or the glitter may peel off.

If you don’t want the coverage to be sheer, match the item color to the glitter color. [2] X Research source

Do not use foam mounting tape or foam tape. It is too thick. You can also use other types of double-sided adhesives, such as sheets, scrolls, or dots. [3] X Research source

If your double-sided tape has a protective covering, smooth the tape down first, then peel the covering off. If you want to use more than 1 color of glitter, lay down the strip for the first color for now.

Work on top of a piece of paper that’s been creased down the middle. When you are done, use the paper to funnel the glitter back into its jar. You can use the regular chunky glitter, but extra-fine glitter will stick to the tape much better.

Brush or spray on 1 to 2 thin coats of sealer. Let each coat dry before adding a second coat.