I made a starter recently for the first time (well, did a trail run using washed yeast that went down the drain before the real thing).
Used a tiny amount and the starter seemed to do fairly well. When I made the actual wort I added the recommended amount and boy did my fermentation kick off! Pitched into a 1.072 wort (about 4 of those points were from DME & Dextrose) and fully utilised my blow off tubes lol.
Using WLP550 it went right up to its higher temp limits (78F) according to the whitelabs spec and had to get some cooling done as I didn't want that much yeast profile in there (guess it's too late now though).