Is it possible to learn two skills? I want to practice learning how to draw and playing the piano

Human doesn't know limits. You can learn as much as you feel confidential and capable of. And due your willingness you must  involve patience and "Can do" and "Never give up" spirit.

-Set up goals and keep your eyes on the prize and never look back.

-Do not become disappointed

-Do not become tired

-Do not stop trying

-Repeat, repeat and repeat

-Practice, practice and practice

-Be positive, be yourself and believe in yourself.

Then, not just two, but you can learn several skills on different categories.

Yes and because of my very low IQ, I had to survive using several career skills.

Your two skills can open doors to many different careers.

Many people are multi-talented.  I don't think I know anyone who can only do one thing.  You might not be great at everything .. No one is.  But you can certainly be a well-rounded person with a variety of abilities of varying degrees.