This part is just a label, so "Download" → Obtain if needed, but it's just the heading. The user probably wants the entire text processed. However, the last line "Download Link:" might just be a heading, so depending on context, maybe leave it as is, but the user said to replace every word. So:
So, I will proceed step by step, ensuring that each word is converted unless it's a proper noun. Also, I must ensure that proper nouns like "3D-Album PicturePro Platinum 4.9" remain unchanged. 3D-Album PicturePro Platinum 4.9 Download
Now check if there are any other terms. The original text also says "available for Windows." "Windows" is a brand name and should be skipped. This part is just a label, so "Download"
One thing to watch out for is words that are part of the product name or titles. Those shouldn't be altered. The user emphasized leaving names unchanged. So "3D-Album PicturePro Platinum 4.9" stays exactly the same throughout. So: So, I will proceed step by step,
But since "3D-Album PicturePro Platinum 4.9" is a proper noun, I'll leave it as is.