For the guage use the following steps.
Round 1: CH2, SCx6 in the 2nd stitch from the hook (6)
Round 2: 2SCx6 (12)
Round 3: 2SC, SCx6 (18)
Round 4. 2SC, SCx2x6 (24)
Round 5. 2SC, SCx3x6 (30)
That measured across is 2.25”.

The pattern that is free on my website is made for an adult female hand size. You can adjust that pattern or you can purchase the pattern listed here. I have included instructions on how to alter the glove for pikachu here.