Step 1. Normal Summon the Level 4 F.A Monster
Step 2. Activate the F.A Field Spell, Giving the F.A Monster 2 Levels, making its level 6
Step 3. Using the F.A Monster's effect, Give itself an another level, making its level 7
Step 4. Activate F.A Dark Dragster's effect, Special Summoning itself from the hand
Step 5. Activate F.A Auto Navigator's effect, decreasing Dark Dragster's level and special summoning itself from the hand. Auto Navigator's level is 5, and Dark Dragster's Level is 4. Additionally, add a F.A. Field Spell from your deck to your hand using Auto Navigator's effect.
Step 6. Link Summon F.A. Shining Star GT using Dark Dragster and F.A. Auto Navigator, making sure it points to the F.A Monster
Step 7. Activate the Field Spell added with Auto Navigator's effect, Increasing the F.A Monster's level to 8 and Placing an Athlete Counter on Shining Star GT