Use a squirty bottle with clean water in, put only a few drop's of washing up liquid not to much tho... Clean screan fully but do not use anythink with a solvent base to it... Spray loads on screen and as you peel off backing to sun strip squirt the sticky side to... Lay sunstrip on screen an position into place, the liquid will help you move it about till right place... Useing a credit card or somink simeler(sp) wrap a thin cloth arouond it as this will stop scratching... Gently drag over strip to pull water out, DO NOT PUSH as you might damage strip... Any excess strip over hanging cut