Go search the engines forum. Tons of tips already there.

In the mean time, change the glow plug. A properly tuned engine requires a good glow plug.

If your fuel is old or been stored in a non-airtight container for a while, replace it.

Start the engine. Adjust the high speed needle using a tachometer to 300-500 rpm below peak on the rich side.

Adjust your idle speed using the throttle trim on the transmitter to get your lowest RELIABLE idle.

Let the engine run at idle for about 30 seconds, then listen carefully as you punch the throttle to full. If the engine hesitates and then runs up to full speed, the low end idle is slightly rich. Lean out the low end needle 1/8 turn. If the engine hesitates and dies or just dies, the low end is probably lean. Richen the low end needle 1/8 turn.

Restart the engine, readjust the high end needle (this is vital), then repeat the entire test. Do this until you achieve a reliable idle around or below 3000 rpm, and the engine transitions smoothly to full throttle.

You'll also find that as the tuning improves, so does starting. A well tuned engine can often be started with just a quick backward flip of the prop-nut or spinner.

Good luck!

Brad