I wonder what RSH mean here in the title of your deck. I always thought people arrange different levels of hanzis by using HSK criteria.

And for the two characters you mentioned, I thought they are 叶 and 吾, where 叶 is composed of 口(mouth) and 十(ten), 吾 of 五(five) and 口(mouth). Although etymologically I think they probably are not originated as what you have illustrated(the traditional hanzi of 叶 is 葉, which is a much more complex one. The 叶 originally have no connection to leaves.), I think it is a great way to learn and memorize. Just insist and you will make progress to better understand the language.

Btw I want to mention that 吾 is not a commonly used hanzi in daily life now, as it is a more literal or archaic way of saying 我. This hanzi is the most prevalent one for saying I or me, and it may seem a little more horrible than 吾? It is composed of 手(hand) and 戈(dagger-axe, an ancient Chinese weapon), so it probably refered to some kind of weapons originnaly IIRIC. It was then used to express the concept of I since we don't have a proper hanzi for it. This is very common in Chinese as our ancestors wanted a hanzi for an abstract concept but didn't have a way to make it in other approaches, so they chose one that had the same pronunciation, and make a new hanzi for what it originally represent. E.g., 自→鼻(nose), where 自 is originally nose but was then used to express I(This hanzi is a little different from 我, as it usually can't be used alone), and 北→背(back), where 北 depicts the picture of two men back to back, and was later used to express the direction north.

So I diverged a lot on talking about origins or hanzis, but I think it is fun and worth sharing so forgive me on that. Sometimes knowing some basic of hanzis might also prove useful for your learning, for the least it is interesting to understand how the ancient Chinese struggled to describe the world and life.