「college」と「collage」の違い

I was reading a blog post the other day in which the writer was talking about:

× a student studying at his collage
○ a student studying at his college

"College" is pronounced like KAH-lij (カリジ without the "i" at the end) in American English, while "collage" is pronounce like koh-LAHJ (コラージ without the "i" at the end). Be careful about the difference in stress.

• collage 【名】《美術》コラージュ◆さまざまな素材を同一画面に組み合わせる芸術的手法。【他動】《美術》～のコラージュを作る

In the dictionary, I found "collage" is コラージュ, which is closer to the French pronunciation. The dictionary has カレッジ for college, but I think if you say that, the pronunciation will sound strange, too. Say it without ッ.

The photo above is a collage I just made for this post. I studied art in college, but I'm not sure that this collage is any good. Anyway, it's full of mistakes I've found in public. Can you remember the correct English for these?