Trying to figure out if she just wants to be a friend, or more

There is a young lady I met in college who seemed to show some real interest in my field of passion. (A form of art I will not go into)

She tried to give me her number so she could help me with future projects, and I was too nervous (she’s stunningly beautiful and very nice), so I said “Oh, I’ll think about it,” and darted off to go have a panic attack. (I’m not good with girls)

A few weeks later, I was chit-chatting with her (she started the conversation this time as well) and this time I asked for her number, and she gave it to me under the pretense that she would help me out with some art projects over the summer and next semester.

After minor confusion (she accidentally gave me the wrong number), she called me back and was very sweet in leaving me a message, apologizing for giving me the wrong number, and telling me to call her over the summer to talk about the project and/or anything else.

I’m trying to figure out if she just likes me as a friend, or is attracted to me as more than a friend (which I find hard to beleive- I try to be a nice guy, but I’m not very good-looking).

She said she deffinitly wants to help out during the summer, and also said to call her if I wanted to chat about things related to my art passion or “anyting I wanted to talk about”, and my best friend think she is trying to give me signals to talk with her because she likes me.

I like her very much as a friend, and I deffinitly do have a crush on her because she just seems so perfect to me in every way, but I’m really out of it when it comes to dating/relationships. I’d like to be sure about it before I call her at the wrong time, or make any sort of advance like asking her out.

Should I try calling her every once in a while (like once a week) and get to know her using casual chit-chat about movies and college- stuff like that; should I space it out and only call her when I would need her help; or should I do something else?

It’s actually quite a hard situation.