Sure, keep it small and low‑profile. First find dry bark and thin sticks—your tinder. Let the bark dry a bit in the shade, then crush it between your palms to make a fine powder. Next, use a few small twigs to create a V‑shaped nest; place the tinder in the center. Light a slow, controlled flame on the outside of the V, so it spreads inward. Blow gently, but not hard, to avoid smoke. As the twigs catch, add progressively larger sticks, keeping the pile low so it stays hidden. Finally, let it simmer—once you’re ready to use the heat, you can quietly add a larger log. Stay still, move slowly, and keep the fire small and steady to avoid attracting attention.

You’re right, wind is the trick. I’d also keep a small pile of dry leaves just beside the bark; they catch fire quickly and give you a moment to finish the main stack before the flame spreads. When you strike, use a thin piece of flint and hold it steady—no sudden jerks. That way the spark stays close to the tinder. And remember, the best heat comes from a slow burn; a quick flare only gives you noise and smoke. Keep it low and quiet, and you’ll see it burn away before anyone notices.