Savipaakulla ei ole vielä muotoa.

Because Finnish often expresses possession with the structure:

possessor + adessive + olla

So:

• savipaakulla = on the clay lump / with the clay lump
• on / ei ole = there is / there is not

Literally, the sentence is something like:

On the clay lump there is not yet shape

That is how Finnish says the clay lump does not yet have a shape.

So -lla here is the adessive case, and in this kind of sentence it marks the possessor.

The dictionary form is savipaakku, meaning a lump of clay or clay lump.

This is a compound word:

• savi = clay
• paakku = lump, clump

Only the last part of the compound changes for case:

• savipaakku → savipaakulla

Notice the consonant change:

• paakku
• stem in weak grade: paaku-
• adessive ending: -lla
• result: paakulla

So savipaakulla is the adessive singular form of savipaakku.

Finnish negation uses a special negative verb. It is not done by just adding a word like not to the main verb.

Here:

• ei = the 3rd person singular negative verb
• ole = the special negative form of olla

So:

• on = is / there is
• ei ole = is not / there is not

Because savipaakulla is grammatically singular, Finnish uses ei.

Examples:

• Savipaakulla on muoto. = The clay lump has a shape.
• Savipaakulla ei ole muotoa. = The clay lump does not have a shape.

Because in Finnish, negation often causes the noun in this kind of sentence to appear in the partitive.

So:

• muoto = shape, form
• muotoa = partitive singular

After ei ole, the thing that does not exist or is not possessed is commonly in the partitive:

• on muoto = there is a shape
• ei ole muotoa = there is no shape / does not have a shape

This is very common in Finnish:

• Minulla on auto. = I have a car.
• Minulla ei ole autoa. = I do not have a car.

So muotoa is exactly what you would expect after ei ole.

Vielä usually means still or yet, depending on the sentence.

In a negative sentence like this, it usually means yet:

• ei ole vielä muotoa = does not yet have a shape

Compare:

• On vielä aikaa. = There is still time.
• Ei ole vielä aikaa. = There is not time yet.

So here vielä shows that the situation may change later: the clay lump does not have a shape at this point, but it may get one.

Structurally, it looks like a location sentence, but functionally it expresses possession.

Finnish uses the same basic pattern for both:

• Pöydällä on kirja. = There is a book on the table.
• Minulla on kirja. = I have a book.

Literally, minulla on kirja is something like At me there is a book.

The sentence Savipaakulla ei ole vielä muotoa works the same way:

• literally: On the clay lump there is not yet shape
• natural English: The clay lump does not yet have a shape

So yes, it is a possession-type sentence built from a structure that originally looks locational.

No, that would not be correct.

If you want to say that the clay lump has or does not have something, Finnish normally uses the adessive possessor structure:

• Savipaakulla on...
• Savipaakulla ei ole...

If you say Savipaakku ei ole..., then savipaakku becomes the subject, and the sentence starts to mean The clay lump is not..., not The clay lump does not have....

So:

• Savipaakulla ei ole vielä muotoa. = The clay lump does not yet have a shape.
• Savipaakku ei ole vielä valmis. = The clay lump is not ready yet.

Those are different sentence types.

Finnish has no articles like English a/an and the.

So muoto or muotoa can mean:

• a shape
• the shape
• sometimes just shape/form in a general sense

The exact meaning comes from context.

In this sentence, English usually needs an article, so you might translate it as:

• The clay lump does not yet have a shape
• or The clay lump does not yet have a form

But Finnish itself does not mark that distinction with a separate word.

Yes, vielä can move, but the given order is very natural.

The sentence is:

• Savipaakulla ei ole vielä muotoa

This places vielä right before the noun phrase it affects, which feels natural in Finnish.

You may also hear slightly different word orders depending on emphasis, for example:

• Savipaakulla ei vielä ole muotoa.

This gives a bit more emphasis to the timing: does not yet have.

Both are possible, but ei ole vielä muotoa is a very normal neutral order.

A close breakdown is:

• savipaakulla = on the clay lump / with the clay lump
• ei = not
• ole = is / exists
• vielä = yet
• muotoa = shape/form (partitive)

So a very literal gloss would be:

On the clay lump there is not yet shape

That sounds strange in English, but it helps show how Finnish builds the meaning. The natural English translation is:

The clay lump does not yet have a shape.