More cover from Postcrossing Forum

After joining some cover round robin group in postcrossing forum. Receive many very nice cover. The first two I get when I join the Miniature Sheet on cover group.
Paul using the Tin Tin Miniature sheet. Really nice and add to my cartoon and comic collection!
Thanks for this nice miniature sheet cover from Netherlands.

This also from the same group of RR. Sent by Kristiina. This sheet issued on 27.03.2006. Centenary of Estonia Theater. Also very nice sheet. Information I can get from EESTI POST:

In 1865, the song and drama society "Estonia" was founded in Tallinn, which in 1906 became the basis for the professional theatre „Estonia”, founded by the directors and actors Paul Pinna and Theodor Altermann. Initially playing mainly drama, the theatre gradually came to its first music productions: „Mam’zelle Nitouche” being the first operetta in 1907 and „Das Nachtlager in Granada” the first opera in 1908. The first ballet, „Coppélia” by Delibes, was staged in 1922. The first Estonian opera – E. Aav’s „Vikerlased” – was staged in 1928. The „Estonia” theatre and concert building was completed in 1913 to drawings by Armas Lindgren and Wivi Lönn. The house was destroyed in an air raid in 1944 and was reopened in 1947. In 1998 the theatre adopted the name Estonian National Opera. It marks its centenary on 16 September 2006. Welcome to the Estonian National Opera! The stamp on the left features costume designs for Evald Aav's opera “Vikerlased” (Vikings), with music of the same opera frorming the background of the souvernir sheet; the ballerina Helmi Puur in Tchaikovsky's Swan Lake figures on the right-hand stamp.

This is joining another RR, Creative Cover. We must draw something related to the stamps using on the cover. This is nice drawing cover from Brazil. Thanks vbformig.
How about this one? sent by Kristiina. Just using the white colour can present this very nice light house on the cover. So creative! Thanks
This light house stamps shown here is Keri Lighthouse, issued on 15.01.2003.
Some information from EESTI POST:

Keri, one of the oldest Estonian lighthouses, stands on a small island of the same name at about 11 miles from the North-Estonian coast, roughly 6 miles due north of Prangli Island in the Gulf of Finland. The island’s first, 1724-built lighthouse was of wood. It was reconstructed early in the 19th century, when the light was mounted in a wooden tower erected on a tall stone base. The new lighthouse went into operation in November 1803. Fifty-five years later the wooden tower was dismantled and replaced by a metal structure with a dioptric light. At present the lighthouse consists of a red cylindrical metal tower on a cylindrical “decanter”. The lantern room at the top of the tower has a gallery running all around it. Nowadays the lighthouse is powered by solar cells and controlled by a computer. The light, visible to 11 miles, is mounted at 28 meters from the ground and at 32 metres from sea level.

The most right stamps is Submarine Lembit issued on 29.02.1996.
The other one is Icebreaker Suur Tõll issued on 30.08.1996 .
Estii post really having a very complete and informative website, which we can get all the information about the stamps issued.