Methanol skin exposure serious or not?
"[A] factory worker who spilled a gallon of methanol down his trouser leg, was dizzy on the following day, took a short nap, and woke up total blind" Biochemical aspects of Methanol Poisoning, Biochemical Pharmacology, vol. 11, page 405.

So spilling methanol on your skin is serious, but the amount in your case is relatively small.  

The article also explains that ingestion of as little as "a teaspoon" (5 mL) has caused permanent blindness.

In any case, the internet is no place to get medical advice.  If you are concerned you should call your local poison control center.