I've put stompgrips on every bike I've ever owned, the Panigale being the eighth. Each time it gets easier, but you must be patient. Your thumbs will be raw from working out the bubbles when done on only one side of the tank. The only time I ever had to re-do the grips was when I rushed it on the gigantic 2007 GSXR750 tank. On my Pani they came out pretty good, even lining up symmetrically, about 1mm gap from the end of the grip to the start of the brushed aluminum section of the tank. The other side has even less bubbles, but I count only a handful here:
Tips:
1. TAKE OFF THE ....... SEAT!
2. Swab the tank with alcohol prep pads
3. Line everything up the way you want it and mark off the EXACT lineup points with blue painters tape
4. Peel off only 3" of grip at a time and warm it up with a hair dryer for 30s. While you do this, also warm up the tank with the hair dryer.
5. Work the grip section with a thumb slowly over the tank - this and #4 above are the tricks to minimize bubbles
6. When it's all on, go over the whole thing with a hair dryer again, especially the edges. This is your last chance to work out any bubbles.
7. Wait 24hrs (seriously!) then ride your ... off!