Yud - proper division, between rosh and regel
1. In והיו the guf of the yud is one circular slant into its regel, there doesn't seem to be any break in the letter - still it is clear to the vision the different parts of the yud, each one is very distinct.
2. In ידך the guf curves till a point on right [A] equal to the finish of kotz RT on the left, then the regel protrudes on a further slant inward [B]. Please notice this point, it will help in the continuation - we might imagine that the begining of the regel is starting descending from the guf finishing at A as a triangle, but in truth the regel is the extra piece B turning back inward.
Try to imagine this yud finishing at A [without B], it would have a strong kotz pointing downward to resemble the regel - but would it be the regel? No! It would be the guf only, in a perfect one-piece moonshape.
The additional pictures from here on, are all from very cheap csavim, I will not relate to any problems in them - only to the specific issue at hand: Yud - proper division, between rosh and regel.
The word אנכי - the yud is worse, from the bottom (the tip of its regel) all-the-way up is actualy 1 piece only - a triangle, the additional kotz on its face causes an illusion as if there is a division between the guf and the regel, but in truth there isn't. Still since to the regular vision it looks like a yud, I am willing to fix it, but would be very afraid to say its kosher as it is right now.
This yud is very problamatic [in truth it is a tiny vav], but may be fixed by adding ink to the bottom of the rosh, filling in between the kotz RT and the regel on the right, or even widening the rosh downwards more [if needed], and afterwards adding a new kotz RT.
It is basicaly only 2 pieces, the thick kotz on the left, and the regel on the right - the body is swallowed up in-between!
The yud of היום seems to my observation like pic. 7.
The yud of בביתך is kosher, the kotz is thin allowing a recognition of its guf - in difference to היום that the thick kotz swallows up the recognition of the guf.
The yud ונתתי (second line) is pasul - enlarge to see accuratly.
The yudim on third line are kosher - although quite ugly.
The yud of יפתה (begining 5th line) is pasul - as pic. 7. The yudim of אלהים אחרים need further inspection.
10. The second yud of כימי is exactly like pic. 5.
The yud of השמים is kosher, there is a definit break between rosh and the regel..