Hot fix rhinestones are a popular embellishment used in various crafts, clothing, and accessories. They have a heat-activated adhesive on the back, allowing them to be easily applied to different surfaces. Here's a step-by-step guide on how to apply hot fix rhinestones:

1. Prepare your materials: Gather the hot fix rhinestones, a hot fix applicator or heat press, and a heat-resistant surface.

2. Plan your design: Determine the placement and pattern of the rhinestones on your project. You can sketch it out or use a template to guide you.

3. Preheat your applicator: If you're using a hot fix applicator, plug it in and let it heat up according to the manufacturer's instructions. It usually takes a few minutes to reach the desired temperature.

4. Position the rhinestones: Place the rhinestones on your project, adhesive side down, in the desired arrangement. Make sure to leave a small gap between each rhinestone to avoid them melting together.

5. Apply heat: Once the applicator is heated, pick up a rhinestone with the applicator's tip or tweezers. Position the applicator's tip directly on top of the rhinestone, applying gentle pressure. Hold it in place for a few seconds, usually around 5-10 seconds, to allow the heat to activate the adhesive. The rhinestone should adhere to the surface.

6. Repeat the process: Continue picking up individual rhinestones with the applicator and applying them to your project, following your design. Remember to reheat the applicator between each rhinestone to ensure proper adhesion.

7. Let it cool: Once you have applied all the rhinestones, allow your project to cool down completely. This will ensure that the adhesive sets properly and the rhinestones stay in place.

8. Test the adhesion: After cooling, gently press on each rhinestone to ensure they are securely attached. If any rhinestones come off, reapply heat to that specific area and press down again.

It's important to follow the instructions provided by the manufacturer of your hot fix applicator and rhinestones for the best results. Practice on a scrap piece of fabric or material before applying the rhinestones to your final project to get a feel for the process.