just for knowledge, the purpose of RTK1 is just making you remember visually the kanji, the book doesn't help to remember how to write at all right ?
I'm done with lesson 5 (98 kanji) and I use obenkyo to write them after ending every lessons, up until 4 evey kanji was easy to draw, now with 5 I find easy to read the kanji, but drawing them isn't that easy since as lessons go on the stories for kanji-keyword get more and more abstracts.